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medical ultrasonic electronics
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digital signal processing and its applications to medicine and biology
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development of new diagnostic techniques with ultrasound
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ultrasonic accurate measurement of heart/artery wall vibrations
- measurement of functionality and viscoelasticity of heart wall
- viscoelasticity measurement and tissue characterization of artery wall
For the following projects, please contact
Dr.
Kanai
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Transcutaneous Measurement and Spectrum Analysis of Heart Wall Vibrations
We have previously developed a novel ultrasonic method,
namely, the phased tracking method, for accurately tracking the
movement of the heart wall based on both the phase and magnitude of
the demodulated signals to determine the instantaneous position of an
object. With this method it is possible to accurately detect small
amplitude velocity signal of less than a few micrometers of the heart
wall which are superimposed on the motion of the heart wall due to the
heart beat. There are several remarkable pulsatile waves during one
cardiac cycle in the resultant velocity signals, some of them being
commonly obtained for both healthy subjects and patients. These
pulsatile waves cannot be recognized in standard echocardiography
M-mode images. In this paper, by focusing on one pulsatile wave which
occurs around the end-systole, the physiological meaning of these are
considered based on various in vivo experiments. The pulsatile wave
measured by this novel ultrasonic method will offer potential for
quantitative assessment of myocardial viability.
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Noninvasive Evaluation of Local Myocardial Thickening and Its Color-Coded
Imaging
For the noninvasive diagnosis of heart disease based on
the acoustic characteristics of the heart muscle, we have developed a
new method for accurately tracking the movement of the heart wall. By
this method, a velocity signal of the heart wall with a small
amplitude of less than 10 micrometers on the motion resulting from a
heartbeat with large amplitude of 10 mm can be successfully detected
with sufficient reproducibility in the frequency range up to several
hundred Hertz continuously for periods of about ten heartbeats. In
this paper, the method is applied to multiple points preset in the
left ventricular (LV) wall along the ultrasonic beam so that the
spatial (depth) distributions of the velocity at these points are
simultaneously obtained. The motion of the heart wall is divided into
the following two components: parallel global motion of the heart wall
and the change in myocardial layer thickening at each depth across the
LV wall during myocardial contraction relaxation. The latter component
is superimposed on the M (motion)-mode image using color to map
contraction as red and expansion as blue. By preliminary human
studies, the principle of the method proposed in this paper is
verified and the frequency band of the components generated by
thickening and or thinning in the myocardium is identified. This new
approach offers potential for research on noninvasive acoustical
diagnosis of myocardial local motility, that is, the myocardial layer
function at each depth in the ventricular wall.
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Noninvasive Measurement of Left Ventricular End-Diastolic Pressure and
Myocardial Elasticity by Analysis of Small Vibration on Heart Wall
We previously presented a new non-invasive method for
measurement of the left ventricular (LV) end-diastolic pressure (EDP)
by combining Mirsky's method and the experimentally derived
relationship. We determined the eigenfrequency by applying the
short-time Fourier transform to the velocity signal from the human
heart wall, transcutaneously measured in in vivo by the phased
tracking method using ultrasound. The elasticity of the heart wall has
been estimated for several human patients.
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Cross-Sectional Imaging of Elasticity of Atherosclerotic Plaque with Transcutaneous
Ultrasound
The phased tracking method is unique due to its extremely
high spatial and temporal resolution. We have developed a method for
showing the cross-sectional image of the elasticity of atherosclerotic
plaque with this phase tracking method using transcutaneous
ultrasound. This demonstrates the feasibility of measurement of
elasticity in cross sectional images. The method is presently being
evaluated in various subjects with atherosclerotic
plaque.
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In vivo measurement of local pulse wave velocity on arterial wall
by detecting and analysing small vibrations for diagnosis of atherosclerosis
Small vibrations were measured simultaneously at two
adjacent points on the aortic wall near the aortic valve by
electronically alternating the direction of an ultrasonic
beam. Transit delay time of the pulse wave between these two points
was determined from the two vibration signals obtained by this
alternating-beam method. Local pulse-wave velocity traveling two
points which are several millimeters apart along the arterial wall was
precisely obtained by dividing distance between these points by
resultant transit delay time. Such local acoustic properties of the
blood vessels should prove useful, especially for noninvasive
diagnosis of early stage arteriosclerosis.
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Yasunori Honjo, Hideyuki Hasegawa, and Hiroshi Kanai:
"二次元収縮弛緩特性計測を目指した心筋運動の高フレームレート計測"
電子情報通信学会論文誌A Vol. J94-A No. 11, pp. 826-835 (November 2011)
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Naoto Miura,takashi Watanabe,Satoru Sugimoto,Kazunori Seki,Hiroshi Kanai:
"Fuzzy FES Controller Using Cycle-to Cycle Contorol for Repetitive Movement Training in Motor Rehabilitation:Experimental Tests with Wireless System"
Journal of Medical Engineering & Technology Vol.1 No.(doi:10.3109/0309902.2011.591480)(September 2011)
Hiroki Takahashi, Hideyuki Hasegawa, and Hiroshi Kanai:
"Automated Identification of the Heart Wall Throughout the Entire Cardiac Cycle Using Optimal Cardiac Phase for Extracted Features"
Japanese Journal of Applied Physics Vol. 50, No. 7, pp. 07HF16-1-07HF16-9 (July 2011)
Atsuhiro Suzuki, Hideyuki Hasegawa, and Hiroshi Kanai:
"Estimation of the Elevational Distance between Image Planes by Analysis of Ultrasonic Echoes from Point Scatterers"
Japanese Journal of Applied Physics Vol. 50, No. 7, pp. 07HF09-1-07HF09-7 (July 2011)
Kazuki Ikeshita, Hideyuki Hasegawa, and Hiroshi Kanai:
"Noninvasive Measurement of Transient Change in Viscoelasticity Due to Flow-Mediated Dilation Using Automated Detection of Arterial Wall Boundaries"
Japanese Journal of Applied Physics Vol. 50, No. 7, pp. 07HF08-1-07HF08-7 (July 2011)
Akinlolu Ponnle, Hideyuki Hasegawa, and Hiroshi Kanai:
"Multi Element Diverging Beam from a Linear Array Transducer for Transverse Cross Sectional Imaging of Carotid Artery: Simulations and Phantom Vessel Validation"
Japanese Journal of Applied Physics Vol. 50, No. 7, pp. 07HF05-1-07HF05-10 (July 2011)
Taku Fukushima, Hideyuki Hasegawa, and Hiroshi Kanai:
"Estimation of Scatterer Diameter by Normalized Power Spectrum of High-Frequency Ultrasonic RF Echo for Assessment of Red Blood Cell Aggregation"
Japanese Journal of Applied Physics Vol. 50, No. 7, pp. 07HF02-1-07HF02-8 (July 2011)
Hiroshi Kanai and Motonao Tanaka:
"Minute Mechanical-Excitation Wave-Front Propagation in Human Myocardial Tissue"
Japanese Journal of Applied Physics Vol. 50, No. 7, pp. 07HA01-1-07HA01-7 (July 2011)
Hideyuki Hasegawa and Hiroshi Kanai:
"High-Frame-Rate Echocardiography Using Diverging Transmit Beams and Parallel Receive Beamforming"
Journal of Medical Ultrasonics Vol. 38, No. 3, pp. 129-140 (July 2011)
Magnus Cinthio, Hideyuki Hasegawa, and Hiroshi Kanai:
"Initial Phantom Validation of Minute Roughness Measurement Using Phase Tracking for Arterial Wall
Diagnosis Non-Invasively In Vivo"
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Vol. 58, No. 4, pp. 853-857 (April 2011)
Hideaki Tagashira, Shenuarin Bhuiyan, Norifumi Shioda, Hideyuki Hasegawa, Hiroshi Kanai, and Kohji Fukunaga:
"σ1-Receptor Stimulation with Fluvoxamine Ameliorates Transverse Aortic Constriction-Induced Myocardial Hypertrophy and Dysfunction in Mice"
American Journal of Physiology Heart and Circulatory Physiology Vol. 299, No. 5, pp. 1535-1545 (November 2010)
Motonao Tanaka, Tsuguya Sakamoto, Shigeo Sugawara, Hiroyuki Nakajima, Takeyoshi Kameyama, Yoshiaki Katahira, Shigeo Ohtsuki, Hiroshi Kanai:
"Spiral Systolic Blood Flow in the Ascending Aorta and Aortic Arch Analyzed by Echo-Dynamography"
Journal of Cardiology Vol. 56, No. 1, pp. 97-110 (July 2010)
Yasunori Honjo, Hideyuki Hasegawa, and Hiroshi Kanai:
"Two-Dimensional Tracking of Heart Wall for Detailed Analysis of Heart Function at High Temporal and Spatial Resolutions"
Japanese Journal of Applied Physics Vol. 49, No. 7, pp. 07HF14-1-07HF14-9 (July 2010)
Tomotaka Sawada, Hideyuki Hasegawa, and Hiroshi Kanai:
"Line-Focus Array Transducers for Effective Actuation of Tissue"
Japanese Journal of Applied Physics Vol. 49, No. 7, pp. 07HF10-1-07HF10-6 (July 2010)
Feng Han, Ying-Mei Lu, Hideyuki Hasegawa, Hiroshi Kanai, Erika Hachimura, Yasufumi Shirasaki, and Kohji Fukunaga:
"Inhibition of Dystrophin Breakdown and Endothelial Nitric-Oxide Synthase Uncoupling Accounts for Cytoprotection by 3-[2-[4-(3-Chloro-2-methylphenyl)-1-piperazinyl]ethyl]-5,6-dimethoxy-1-(4-imidazolylmethyl)-1H-indazole Dihydrochloride 3.5 Hydrate (DY-9760e) in Left Ventricular Hypertrophied Mice"
The Journal of Pharmacology and Experimental Therapeutics Vol. 332, No. 2, pp. 421-428 (February 2010)
Hideyuki Hasegawa and Hiroshi Kanai:
"Phase-Sensitive Lateral Motion Estimator for Measurement of Artery-Wall Displacement Phantom Study"
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control Vol. 56, No. 11, pp. 2450-2462 (November 2009)
Toshio Yamagishi, Makoto Kato, Yoshiro Koiwa, Hideyuki Hasegawa and Hiroshi Kanai:
"Impact of Lifestyle-Related Diseases on Carotid Arterial Wall Elasticity as Evaluated by an Ultrasonic Phased-Tracking Method in Japanese Subjects"
Journal of Atherosclerosis and Thrombosis Vol. 16, No. 6, pp. 782-791 (November 2009)
Hiroki Takahashi, Hideyuki Hasegawa, Hiroshi Kanai:
"Identification of Heart Wall Based on Coherence among Ultrasonic RF Echoes"
Japanese Journal of Medical Ultrasonics Vol. 36, No. 6, pp. 679-681 (November 2009)(in Japanese)
Ai Tokita, Yasushi Ishigaki, Hisashi Okimoto, Hideyuki Hasegawa, Yoshiro Koiwa, Makoto Kato, Hisamitsu Ishihara, Yoshinori Hinokio, Hideki Katagiri, Hiroshi Kanai, Yoshitomo Oka:
"Carotid Arterial Elasticity is a Sensitive Atherosclerosis Value Reflecting Visceral Fat Accumulation in Obese subjects"
Atherosclerosis Vol. 206, pp. 168-172 (September 2009)
Toshio Yamagishi, Makoto Kato, Yoshiro Koiwa, Ken Omata, Hideyuki Hasegawa and Hiroshi Kanai:
"Evaluation of Plaque Stabilization by Fluvastatin with Carotid Intima-Medial Elasticity Measured by a Transcutaneous Ultrasonic-Based Tissue Characterization System"
Journal of Atherosclerosis and Thrombosis Vol. 16, No. 5, pp. 662-673 (September 2009)
Shuumarjav Uurtuya, Kazuhiko Kotani, Nobuyuki Taniguchi, Hiroaki Matsunaga,
Hiroshi Kanai, Hideyuki Hasegawa, Kazuomi Kario, Shun Ishibashi, Kouichi Itoh:
"Relationship between upper Limb Peripheral Artery Stiffness Using the
Radial Artery and Atherosclerotic Parameters"
Journal of Medical Ultrasonics Vol. 36, No. 3, pp. 129-135 (September 2009)
Kazuki Ikeshita, Hideyuki Hasegawa, Hiroshi Kanai:
"Flow-Mediated Change in Viscoelastic Property of Radial Arterial Wall
Measured by 22MHz Ultrasound"
Japanese Journal of Applied Physics Vol. 48, No. 7, pp. 07GJ10-1-07GJ10-5 (July 2009)
Nobutaka Saitoh, Hideyuki Hasegawa, Hiroshi Kanai:
"Estimation of Scatterer Diameter Using Ultrasonic Backscattering Property
for Assessment of Red Blood Cell Aggregation"
Japanese Journal of Applied Physics Vol. 48, No. 7, pp. 07GJ08-1-07GJ08-5 (July 2009)
Hiroshi Kanai:
"Propagation of Vibration Caused by Electrical Excitation in the Normal Human Heart"
Ultrasound in Medicine & Biology Vol. 35, No. 6, pp. 936-948 (June 2009)
Hideyuki Hasegawa, Michiko Matsuura, Hiroshi Sato, Teruko Yamamoto and Hiroshi Kanai:
"Imaging of Gaps in Digital Joints by Measurement of Ultrasound Transmission Using a Linear Array"
Ultrasound in Medicine and Biology Vol. 35, No. 3, pp. 382-394 (March 2009)
Hideyuki Hasegawa and Hiroshi Kanai:
"Simultaneous Imaging of Artery-Wall Strain and Blood Flow by High Frame Rate Acquisition of RF Signals"
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control Vol. 55, No. 12, pp. 2626-2639
(December 2008)
Motonao Tanaka, Tsuguya Sakamoto, Shigeo Sugawara, Hiroyuki Nakajima, Yoshiaki Katahira, Shigeo Ohtsuki, Hiroshi Kanai:
"Blood Flow Structure and Dynamics, and Ejection Mechanism in the Left Ventricle: Analysis Using
Echo-Dynamography"
Journal of Cardiology Vol. 52, No.2, pp. 86-101 (October 2008)
Hideyuki Hasegawa and Hiroshi Kanai:
"Reduction of Influence of Variation in Center Frequencies of RF Echoes on Estimation of Artery-Wall
Strain"
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control Vol. 55, No. 9, pp. 1921-1934
(September 2008)
Yoshitaka Odagiri, Hideyuki Hasegawa and Hiroshi Kanai:
"Ultrasonic Measurement of Strain Distribution Inside Object Cyclically Compressed by Dual Acoustic
Radiation Force"
Japanese Journal of Applied Physics Vol. 47, No. 5, pp. 4193-4199 (May 2008)
Kentaro Tsuzuki, Hideyuki Hasegawa, Hiroshi Kanai, Masataka Ichiki, and Fumiaki Tezuka:
"Threshold Setting for Likelihood Function for Elasticity-Based Tissue Classification of Arterial Wall by
Evaluating Variance in Measurement of Radial Strain"
Japanese Journal of Applied Physics Vol. 47, No. 5, pp. 4180-4187 (May 2008)
Kazuki Ikeshita, Hideyuki Hasegawa, and Hiroshi Kanai:
"Ultrasonic Measurement of Transient Change in the Stress-Strain Property of Radial Arterial Wall Caused
by Endothelial-Dependent Vasodilation"
Japanese Journal of Applied Physics Vol. 47, No. 5, pp. 4165-4169 (May 2008)
Takaomi Kinugawa, Hideyuki Hasegawa, and Hiroshi Kanai:
"Automated Segmentation of Heart Wall Using Coherence Among Ultrasonic RF Echoes"
Japanese Journal of Applied Physics Vol. 47, No. 5, pp. 4155-4164 (May 2008)
Kentaro Tsuzuki, Hideyuki Hasegawa, Masataka Ichiki, Fumiaki Tezuka, and Hiroshi Kanai,
"Optimal Region-of-Interest Settings for Tissue Characterization Based on Ultrasonic Elasticity Imaging," in
Ultrasound in Medicine and Biology Vol. 34, No. 4, pp. 573-585, (April 2008).
Hisashi Okimoto, Yasushi Ishigaki, Yoshihiro Koiwa, Yoshinori Hinokio, Takehide Ogihara, Susumu Suzuki,
Hideki Katagiri, Takayoshi Ohkubo, Hideyuki Hasegawa, Hiroshi Kanai, Yoshitomo Oka,
"A Novel Method for Evaluating Human Carotid Artery Elasticity: Possible Detection of Early Stage
Atherosclerosis in Subjects with Type 2 Diabetes," in
Atherosclerosis Vol. 196, No. 1, pp. 391-397 (January 2008)
Takanori Numata, Hideyuki Hasegawa, Hiroshi Kanai, "Basic Study on Detection of Outer Boundary of
Arterial Wall Using Its Longitudinal Motion," in
Japanese Journal of Applied Physics Vol. 46, No. 7B, pp. 4900-4907 (July 2007)
Teppei Onodera, Hideyuki Hasegawa, Hiroshi Kanai, "Measurement of Angular Dependence of Ultrasonic
Scattering from Wire Phantom Mimicking Myocardial Fiber," in
Japanese Journal of Applied Physics Vol. 46, No. 7B, pp. 4897-4899 (July 2007)
Hiroki Yoshiara, Hideyuki Hasegawa, Hiroshi Kanai, Motonao Tanaka, "Ultrasonic Imaging of Propagation
of Contraction and Relaxation in the Heart Walls at High Temporal Resolution," in
Japanese Journal of Applied Physics Vol. 46, No. 7B, pp. 4889-4896 (July 2007)
Takuya Kaneko, Hideyuki Hasegawa, Hiroshi Kanai, "Ultrasonic Measurement of Change in Elasticity due to
Endothelium Dependent Relaxation Response by Accurate Detection of Artery-Wall Boundary," in
Japanese Journal of Applied Physics Vol. 46, No. 7B, pp. 4881-4888 (July 2007)
Kazuki Kudo, Hideyuki Hasegawa, Hiroshi Kanai, "Measurement of Angular Dependence of Ultrasonic Echo
for Estimation of Surface Roughness," in
Japanese Journal of Applied Physics Vol. 46, No. 7B, pp. 4873-4880 (July 2007)
Yusaku Abe, Hideyuki Hasegawa, Hiroshi Kanai, "Accurate Estimation of Scattering Strength Distribution
by Simultaneous Receiving of Ultrasonic Echoes with Multichannel Transducer Array," in
Japanese Journal of Applied Physics Vol. 46, No. 7B, pp. 4813-4819 (July 2007)
Kosuke Ebina, Hideyuki Hasegawa, Hiroshi Kanai, "Investigation of Frequency Characteristics in Cutting
of Soft Tissue Using Prototype Ultrasonic Knives," in
Japanese Journal of Applied Physics Vol. 46, No. 7B, pp. 4793-4800 (July 2007)
Hiroki Yoshiara, Hideyuki Hasegawa, Hiroshi Kanai, Motonao Tanaka, "Imaging of Transient in Myocardial
Contraction and Relaxation by Measuring Strain Rate at High Temporal Resolution," in
Japanese Journal of Medical Ultrasonics Vol. 34, No. 4, pp. 439-448 (July-August 2007)(in Japanese)
Hideyuki Hasegawa and Hiroshi Kanai, "Tissue Structure of Arterial Wall Revealed with Elasticity Imaging," in
Journal of Medical Ultrasonics Vol. 34, No. 1, pp. 73-74 (March 2007)
Kazuki Kudo, Hideyuki Hasegawa, and Hiroshi Kanai, "Improved Imaging of the Carotid Artery in the
Short-Axis Plane by a Mechanical Scanning Ultrasonic Probe," in
Journal of Medical Ultrasonics Vol. 34, No. 1, pp. 23-27 (March, 2007)
Toshio Yamagishi, Makoto Kato, Yoshiro Koiwa, Hideyuki Hasegawa, Hiroshi Kanai, "Usefulness of
Measurement of Carotid Arterial Wall Elasticity Distribution in Detection of Early-Stage Atherosclerotic
Lesions Caused by Cigarette Smoking," in
J. Med. Ultrasonics Vol. 33, No. 4, pp. 203-210 (December 2006)
Hideyuki Hasegawa and Hiroshi Kanai, "Modification of the Phased-Tracking Method for Reduction
of Artifacts in Estimated Artery Wall Deformation," in
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control.
Vol. 53, No. 11, pp. 2050-2064 (November 2006)
Shutaro Kunii, Junichi Sugawara, Yoshitaka Kimura, Noriaki Imai, Hiroshi Chisaka, Hideyuki Hasegawa,
Yoshiro Koiwa, Hiroshi Kanai, Kunihiro Okamura, "Fetal Myocardial Thickening Measured by
Ultrasonic-Based Technique Called "Phased-Tracking Method"," in
Fetal Diagnosis and Therapy Vol. 21, No. 5, pp. 458-465, 2006.
Hideyuki Hasegawa and Hiroshi Kanai, "Measurement of Nonlinear Property of Arterial Wall
Using Remote Cyclic Actuation," in
J. Med. Ultrasonics Vol. 33, No. 3, pp. 143-151 (2006).
Jun Inagaki, Hideyuki Hasegawa, Hiroshi Kanai, Masataka Ichiki and Fumiaki Tezuka, "Tissue
Classification of Arterial Wall Based on Elasticity Image," in
Japanese Journal of Applied Physics Vol. 45, No. 5B, pp. 4732-4735, May 2006.
Chihiro Arihara, Hideyuki Hasegawa, and Hiroshi Kanai, "Accurate Ultrasonic Measurement of
Surface Profile Using Phase Shift of Echo and Inverse Filtering," in
Japanese Journal of Applied Physics Vol. 45, No. 5B, pp. 4727-4731, May 2006.
Hideyuki Hasegawa, Mikito Takahashi, Yoshifumi Nishio, and Hiroshi Kanai, "Generation of Strain
Inside Objects Using Dual Acoustic Radiation Force," in
Japanese Journal of Applied Physics Vol. 45, No. 5B, pp. 4706-4711, May 2006.
Takashi Mashiyama, Hideyuki Hasegawa, and Hiroshi Kanai, "Designing Beam Steering for Accurate
Measurement of Intima-Media Thickness at Carotid Sinus," in
Japanese Journal of Applied Physics Vol. 45, No. 5B, pp. 4722-4726, May 2006.
Hiroshi Kanai, Hideyuki Hasegawa, and Kohsuke Imamura, "Spatial Distribution Measurement
of Heart Wall Vibrations Generated by Remote Perturbation of Inner Pressure," in
Japanese Journal of Applied Physics Vol. 45, No. 5B, pp. 4718-4721, May 2006.
Hideyuki Hasegawa and Hiroshi Kanai, "Improving Accuracy in Estimation of Artery-Wall
Displacement by Referring to Center Frequency of RF Echo," in
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Vol. 53, No. 1, pp. 52-63, January 2006.
Hiroshi Kanai, "Propagation of Spontaneously Actuated Pulsive Vibration in Human Heart
Wall and In Vivo Viscoelasticity Estimation," in IEEE Transactions on
Ultrasonics, Ferroelectrics, and Frequency Control
Vol. 51, No. 11, pp. 1931-1942, November 2005.
Masataka Sugimoto, Hideyuki Hasegawa, and Hiroshi Kanai, "Change in Elasticity
Caused by Flow-Mediated Dilation Measured Only for Intima-Media Region of
Brachial Artery," in Japanese Journal of Applied Physics
Vol. 44, No. 8, pp. 6297-6301, August 2005.
Kazuhiro Sunagawa and Hiroshi Kanai, "Measurement of Shear Wave Propagation and
Investigation of Estimation of Shear Viscoelasticity for Tissue Characterization
of the Arterial Wall," in J. Med. Ultrasonics Vol. 32, pp. 39-47,
July 2005.
Hideyuki Hasegawa and Hiroshi Kanai, "Frequency Analysis of Strain of Cylindrical
Shell for Assessment of Viscosity," in Japanese Journal of Applied Physics
Vol. 44, No. 6B, pp. 4609-4614, June 2005.
Jun Inagaki, Hideyuki Hasegawa, Hiroshi Kanai, Masataka Ichiki and Fumiaki Tezuka,
"Construction of Reference Data for Tissue Characterization of Arterial
Wall Based on Elasticity Images," in Japanese Journal of Applied Physics
Vol. 44, No. 6B, pp. 4593-4597, June 2005.
Jiang Tang, Hideyuki Hasegawa and Hiroshi Kanai, "Cross-Sectional Elasticity
Imaging of Arterial Wall by Comparing Measured Change in Thickness with Model
Waveform," in Japanese Journal of Applied Physics Vol. 44, No. 6B, pp. 4588-4592,
June 2005.
Nozomi Nakagawa, Hideyuki Hasegawa, and Hiroshi Kanai,
"Cross-Sectional Elasticity Imaging of Carotid Arterial Wall in Short-Axis
Plane by Transcutaneous Ultrasound" in Japanese Journal of Applied Physics
Vol. 43, No. 5B, pp. 3220-3226, May 2004.
Hideyuki Hasegawa, and Hiroshi Kanai,
"Measurement of Elastic Moduli of the Arterial Wall at Multiple Frequencies
by Remote Actuation for Assessment of Viscoelasticity" in Japanese Journal
of Applied Physics Vol. 43, No. 5B, pp. 3197-3203, May 2004.
Hideyuki Hasegawa, Hiroshi Kanai, and Yoshiro Koiwa,
"Detection of Lumen-Intima Interface of Posterior Wall for Measurement of
Elasticity of the Human Carotid Artery" in IEEE Transactions on Ultrasonics,
Ferroelectrics, and Frequency Control Vol. 51, No. 1, pp.93-108, 2004.
Kazuaki Michishita, Hideyuki Hasegawa, and Hiroshi Kanai,
"Ultrasonic Measurement of Minute Displacement of Object Cyclically Actuated by
Acoustic Radiation Force" in Japanese Journal of Applied Physics Vol. 42,
Part 1, No. 7A, pp. 4608-4612, July 2003.
Hiroshi Kanai, Hideyuki Hasegawa, Masataka Ichiki, Fumiaki Tezuka, Yoshiro Koiwa,
"Elasticity Imaging of Atheroma with Transcutaneous Ultrasound -Preliminary Study-" in
Circulation Vol. 107, No. 24, pp. 3018-3021, June 24, 2003.
Hideyuki Hasegawa, Hiroshi Kanai, Yoshiro Koiwa, and James P. Butler,
"Measurement and Change in Wall Thickness of Cylindrical Shell Due to Cyclic
Remote Actuation for Assessment of Viscoelasticity of Arterial Wall" in
Japanese Journal of Applied Physics Vol. 42, Part 1, No. 5B, pp. 3255-3261,
May 2003.
Hiroshi Kanai, Yoshiro Koiwa, Shin'ichi Katsumata, Naoyuki Izumi, Motonao Tanaka,
"Measurement of Rapid Variation in Ultrasound Backscattering during Change in
Thickness of Tissue Phantom" in Japanese Journal of Applied Physics
Vol. 42, Part 1, No. 5B, pp. 3239-3245, May 2003.
Hiroshi Kanai, Shin-ichi Katsumata, Hideyuki Honda, and Yoshiro Koiwa,
"Measurement and Analysis of Vibration in the Myocardium Telescopic
Motion for Novel Echo-Graphic Diagnosis" in Acoustical Science and
Technology, Vol. 24, No. 1, pp. 17-22, 2003.
Yoshiro Koiwa, Hiroshi Kanai, Hideyuki Hasegawa, Yoshiko Saitoh,
Kunio Shirato, "Left Ventricular Transmural Systolic Function by
High-sensitivity Velocity Measurement "Phased Tracking Method"
Across the Septum in Doxorubicin Cardiomyopathy" in Ultrasound
in Medicine and Biology, vol. 28, Nos. 11/12, pp. 1395-1403, 2002.
Masaru Watanabe, Hideyuki Hasegawa, Hiroshi Kanai, "Investigation on Accuracy in
Measurement of Small Change in Arterial Wall Thickness by Computer Simulation of
Ultrasonic Field in 3-D Space" in The Journal of the Acoustical Society of Japan,
Vol. 58, No. 11, pp. 696-703, 2002.(in Japanese)
Yoshiro Koiwa, Hideichi Kamada, Mikio Inose, Kunio Shirato,
Yoshiko Saito, Hideyuki Hasegawa, Hiroshi Kanai, "Systolic
Heterogeneity of Transmural Myocardial Function in Normal Subjects:
Physiological Function Heterogeneity" in Tohoku J. Exp. Med,
Vol. 197, pp. 183-187, 2002.
Masaru Watanabe, Hideyuki Hasegawa, Hiroshi Kanai, "Optimization
of Condition on Ultrasonic Beam for Measurement of Small Change in
Thickness of Arterial Wall" in Japanese Journal of Applied
Physics, Vol. 41, Part 1, No. 5B, pp. 3613-3618, 2002.
Hideyuki Hasegawa, Hiroshi Kanai, Yoshiro Koiwa, "Modified Phased
Tracking Method for Measurement of Change in Thickness of Arterial
Wall" in Japanese Journal of Applied Physics, Vol. 41, Part 1, No.
5B, pp. 3563-3571, 2002.
Hitoshi Mita, Hiroshi Kanai, Yoshiro Koiwa, Masataka Ichiki, and Fumiaki
Tezuka, "Cross-sectional Elastic Imaging of Arterial Wall using Intravascular
Ultrasonography (IVUS)," in Japanese Journal of Applied Physics,
Vol. 40, Part 1, No. 7, pp. -, 2001.
Masaru Watanabe and Hiroshi Kanai, "Optimization of Focal Position of Ultrasonic
Beam in Measurement of Small Change in Arterial Wall Thickness," in Japanese
Journal of Applied Physics, Vol. 40, Part 1, No. 5B, pp. 3918-3921,
2001.
Hiroshi Kanai and Yoshiro Koiwa, "Myocardial Rapid Velocity Distribution,"
in Ultrasound in Medicine and Biology, vol. 27, No. 4, pp. 481-498,
2001.
- Hideyuki Hasegawa, Hiroshi Kanai, Nozomu Hoshimiya, and Yoshiro Koiwa,
"Evaluation of Regional Elastic Modulus of Cylindrical Shell with Nonuniform
Wall Thickness," in Journal of Medical Ultrasonics, vol. 28, No.
1, pp. J3--J13, 2001.(in Japanese)
Hideyuki Hasegawa, Hiroshi Kanai, Nozomu Hoshimiya, Yoshiro Koiwa,
"Evaluating the Regional Elastic Modulus of a Cylindrical Shell with
Nonuniform Wall Thickness" in J. Med. Ultrasonics, Vol. 31, pp. 81-90,
2004.(in English)
Hideyuki Hasegawa, Hiroshi Kanai, Nozomu Hoshimiya, and Yoshiro Koiwa,
"Reduction of Influence of Decrease in Signal-to-Noise Ratio in Measurement
of Change in Thickness of Arterial Wall Due to Heartbeat," in Japanese
Journal of Applied Physics,vol. 39, part 1, no. 5B, pp. 3257-3261,
2000.(in Japanese)
Hiroshi Kanai and Yoshiro Koiwa, "Real-time Velocimetry for Evaluation
of Change in Thickness of Arterial Wall," in Ultrasonics, vol. 38,
no. 1-8, pp. 381-386, 2000.
Hiroshi Kanai, Sachiko Yonechi, Ikuko Susukida, Yoshiro Koiwa, Hide-ichi
Kamada, and Motonao Tanaka "Onset of Pulsatile Waves in the Heart Walls
at End-systole," in Ultrasonics, vol. 38, no. 1-8, pp. 405-411, 2000.
-
Kazuhiro Sunagawa, Hiroshi Kanai, Yoshiro Koiwa, Keiko Nitta, and Motonao
Tanaka, "Simultaneous Measurement of Vibrations on Arterial Wall at Upstream
and Downstream of Arteriostenosis Lesion and their Analysis," in Journal
of Medical Ultrasonics, vol. 27, no. 1, pp. 15-31, 2000. (in Japanese)
Kazuhiro Sunagawa, Hiroshi Kanai, Yoshiro Koiwa, Keiko Nitta, and Motonao
Tanaka, "Simultaneous Measurement of Vibrations on Arterial Wall at Upstream
and Downstream of Arteriostenosis Lesion and their Analysis," in Journal
of Medical Ultrasonics, Vol. 27, No. Winter, pp. 157-173, 2001. (in English)
-
Hitoshi Asai and Hiroshi Kanai, "Noninvasive Measurement of Stiffness and
Density of Bone for Its Diagnosis Using Ultrasound," in Journal of Medical
Ultrasonics, vol. 26, no. 10, pp. 1027-1033, 1999. (in Japanese)
Hitoshi Asai and Hiroshi Kanai, "Noninvasive Measurement of Stiffness and
Density of Bone for Its Diagnosis Using Ultrasound," in Journal of Medical
Ultrasonics, Vol. 29, No. Autumn, pp. 129-136, 2002. (in English)
Hiroshi Kanai, Yoshiro Koiwa, and Jianping Zhang, "Real-Time Measurements
of Local Myocardium Motion and Arterial Wall Thickening," in IEEE Transactions
on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 46, no.
5, pp. 1229-1241, September 1999.
Hiroshi Kanai, Kohshiro Sugimura, Yoshiro Koiwa, and Yasuo Tsukahara, "Accuracy
Evaluation in Ultrasonic-based Measurement of Microscopic Change in Thickness,"
in Electronics Letters, vol. 35, no. 12, pp. 949-950, 10th June 1999.
Hiroshi Kanai, Yoshiro Koiwa, Yoshiko Saito, Ikuko Susukida, and Motonao
Tanaka, "In vivo Measurement of Small Velocity Signals and Change
in Thickness of the Heart Walls," in Japanese Journal of Applied Physics,
vol.38, part 1, no. 5B, pp. 3403-3408, May 1999.
Hiroshi Kanai, Shigemitsu Nakaya, Hideyuki Honda, and Yoshiro Koiwa, "Noninvasive
Estimation of Left-Ventricular End-Diastole Elasticity by Analyzing Heart
Wall Vibrations," in Electronics Letters, vol. 35, no. 10, pp. 765-766,
13th May 1999.
Hiroshi Kanai and Yoshiro Koiwa, "PARCORR-Based Time-Dependent AR Spectrum
Estimation of Heart Wall Vibrations," in
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences,
vol. E82-A, no. 4, pp. 572-579, April 1999.
The pdf file of this article is provided under the permission of IEICE with permission number of 06RB0109.
Nakaya shigemitsu, Hiroshi Kanai, Noriyoshi Chubachi, Hideyuki Honda, and
Yoshiro Koiwa, "Noninvasive Measurement of Left Ventricular End-Diastolic
Pressure and Myocardial Elasticity by Analysis of Small Vibration on Heart
Wall," in Japanese Journal of Medical Electronics and Biological Engineering,
vol.37, no. 1, pp. 1-8, April 1999. (in Japanese)
Hideyuki Honda, Shigemitsu Nakaya, Hideichi Kamada, Hideyuki, Hasegawa,
Jun Demachi, Hisao Chikama, Kohshiro Sugimura, Yoshito Yamamoto, Norihisa
Kumasaka, Tamotsu Tanita, Jun Ikeda, Hiroshi Kanai, Yoshiro Koiwa, and
Kunio Shirato, "Non-invasive Estimation of Human Left Ventricular End-Diastolic
Pressure," in Medical Engineering & Physics, vol. 20, pp. 485-488,
1998
Hideyuki Hasegawa, Hiroshi Kanai, Nozomu Hoshimiya, Noriyoshi Chubachi,
and Yoshiro Koiwa, "Frequency Analysis of Change in Thickness of Arterial
Wall," in The Journal of the Acoustical Society of Japan, vol. 54,
no. 7, pp. 473-481, 1998. (in Japanese)
Kohshiro Sugimura, Hiroshi Kanai, Noriyoshi Chubachi, Yasuo Tsukahara,
Yoshiro Koiwa, Hideichi Kamada, and Fumiaki Tezuka, "Noninvasive Evaluation
of Cardiomyopathy by Measuring Thickness Change in local Myocardium," in Journal
of Medical Ultrasonics, vol. 25, no. 5, pp. 625-631, May 1998. (in Japanese)
Hideyuki Hasegawa, Hiroshi Kanai, Nozomu Hoshimiya, Noriyoshi Chubachi,
and Yoshiro Koiwa, "Accuracy Evaluation in the Measurement of a Small Change
in the Thickness of Arterial Walls and the Measurement of Elasticity of
the Human Carotid Artery," in Japanese Journal of Applied Physics, vol.
37, Part 1, no. 5B, pp. 3101-3105, May 1998.
Masahiko Takano, Hiroshi Kanai, Nozomu Hoshimiya, and Noriyoshi Chubachi,
"Dependence of Elastic Modulus on Inner Pressure of Tube Wall Estimated
from Measured Pulse Wave Velocity," in
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences,
vol. E81-A, no. 5, pp. 889-894, May 1998.
The pdf file of this article is provided under the permission of IEICE with permission number of 06RB0109.
Hiroshi Kanai, Hideyuki Hasegawa, Noriyoshi Chubachi, Yoshiro Koiwa, and
Motonao Tanaka, "Noninvasive Evaluation of Local Myocardial Thickening
and Its Color-Coded Imaging," in IEEE Transactions on Ultrasonics, Ferroelectrics,
and Frequency Control, vol. 44, no. 4, pp. 752-768, July 1997.
Hideyuki Hasegawa, Hiroshi Kanai, Noriyoshi Chubachi, and Yoshiro Koiwa,
"Evaluation of the Elastic Modulus of the Arterial Wall by Accurate Noninvasive
Measurement of Change in Its Thickness," in Journal of Medical Ultrasonics,
vol.24, no. 6, pp. 851-860, June 1997. (in Japanese)
Masashi Ozawa, Hiroshi Kanai, and Noriyoshi Chubachi, "Analysis of Small
Vibrations on the Arterial Wall Measured Using Ultrasound in In vivo,"
in The Journal of the Acoustical Society of Japan, vol. 53, no. 7,
pp. 517-523, July 1997. (in Japanese)
Hideyuki Hasegawa, Hiroshi Kanai, Noriyoshi Chubachi, and Yoshiro Koiwa,
"Evaluation of Local Elastic Characteristics by Accurate Noninvasive Measurement
of Small Vibrations on Arterial Wall," in Journal of Acoustical Society
of Japan, vol. 53, no. 5, pp. 346-351, May 1997. (in Japanese)
Hiroshi Kanai, Masaki Imai, and Noriyoshi Chubachi, "Accurate Power Spectrum
Estimation of a Damped Sinusoidal Signal in Low SNR Cases Based on a Newly
Defined Transfer Function," in Acustica acta acustica vol. 8, no.
32, pp. 297-303, March/April 1997.
Hideyuki Hasegawa, Hiroshi Kanai, Noriyoshi Chubachi, and Yoshiro Koiwa,
"Noninvasive Evaluation of Poisson's Ratio of Arterial Wall Using Ultrasound,"
in Electronics Letters, vol. 33, no. 4, pp. 340-342, February 13th,
1997.
Hitoshi Asai, Hiroshi Kanai, and Noriyoshi Chubachi, "A New Method Based
on the Microdefocusing Method for Measuring Velocity of Sound Propagating
on the Surface of Bone," in Japanese Journal of Medical Ultrasonics, vol.
23, no. 12, pp. 865-869, December 1996. (in Japanese)
Hitoshi Asai, Hiroshi Kanai, and Noriyoshi Chubachi, "Noninvasive Method
for Measuring Velocity of Leaky Surface Skimming Compressional Wave Propagating
on Bone Surface," in Electronics Letters, vol. 32, no. 24, pp. 2290-2291,
21st November 1996.
Hitoshi Asai, Hiroshi Kanai, and Noriyoshi Chubachi, "Measurement of Acoustic
Impedance of Bone by Considering Reflection and Attenuation of Soft Tissue
Using the Ultrasonic Reflection Method," in Japanese Journal of Medical
Ultrasonics, vol. 23, no. 9, pp. 643-650, September 1996. (in Japanese)
Hiroshi Kanai, Michie Sato, Yoshiro Koiwa, and Noriyoshi Chubachi, "Transcutaneous
Measurement and Spectrum Analysis of Heart Wall Vibrations," in IEEE
Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol.
43, no. 5, pp. 791-810, September 1996.
Michie Sato, Hiroshi Kanai, Noriyoshi Chubachi, Hideyuki Honda, and Yoshiro
Koiwa, "Measurement of Left Ventricle End-Diastolic Pressure by Analysis
of Small Vibration on Heart Wall," in The Journal of Acoustical Society
of Japan, vol. 52, no. 9, pp. 703-710, September 1996. (in Japanese)
Tomohisa Kimura, Hitoshi Asai, Hiroshi Kanai, and Noriyoshi Chubachi,
"High-resolution Determination of Transit Delay Time of Ultrasound in a Thin
Layer by Deleting the Characteristics of Ultrasonic Transducer Using Cascade
Inverse Matrices," in Japanese Journal of Medical Ultrasonics, vol. 23,
no. 6, pp. 3-14, June 1996. (in Japanese)
Michie Sato, Hiroshi Kanai, Noriyoshi Chubachi, Hideyuki Honda, and Yoshiro
Koiwa, "Method for Noninvasive Estimation of Left Ventricular End Diastolic
Pressure Based on Analysis of Heart Wall Vibration," in Electronics
Letters, vol. 32, no. 11, pp. 949-950, 23rd May 1996.
Yun-Seok Jang, Tetsuya Akasaka, Michie Sato, Hiroshi Kanai, and Noriyoshi
Chubachi, "Measurement and Analysis of Vibrations on Surface of Phantom
Induced by Piezoelectric Extracorporeal Shock Wave Lithotripter," in Japanese
Journal of Applied Physics, vol. 35, Part 1, no. 5B, pp. 3163-3166,
May 1996.
Makoto Kondo, Masashi Ozawa, Hiroshi Kanai, and Noriyoshi Chubachi, "Simultaneous
Measurement of Small Vibrations at Multiple Points on Aortic Wall, and
the Analysis of Their Spectra," in Japanese Journal of Medical Ultrasonics,
vol.23, no. 4, pp. 271-280, April 1996. (in Japanese)
Kunio Kamimura, Hiroshi Kanai, and Noriyoshi Chubachi, "Design of Optimum
FIR Filter for Highly Accurate Weight-Measurement," in The Journal of
Acoustical Society of Japan, vol. 52, no. 4, pp. 268-275, April 1996.
(in Japanese)
Makoto Kondo, Hiroshi Kanai, and Noriyoshi Chubachi, "A New Ultrasonic
Pulse Doppler-Based Method for Measuring Higher Velocity Components," in
The Transactions of the Institute of Electrical Engineers of Japan,
vol.115-C, no. 12, pp. 1425-1431, December 1995. (in Japanese)
Tomohisa Kimura, Hiroshi Kanai, and Noriyoshi Chubachi, "High-Resolution
Determination of Transit Time of Ultrasound in a Thin Layer in Pulse-Echo
Method" in
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences,
vol. E78-A, no. 12, pp. 1677-1682, December 1995.
The pdf file of this article is provided under the permission of IEICE with permission number of 06RB0109.
Hiroshi Kanai, Muhun Park, and Noriyoshi Chubachi, "In vivo Measurement
of Frequency Characteristics of Phase Velocity of Bone with Bending-Vibration,"
in Electronics Letters, vol. 31, no. 23, pp. 1969-1971 October 1995.
Kunio Kamimura, Hiroshi Kanai, and Noriyoshi Chubachi, "Design of Optimum
FIR Filter for Eliminating Mechanical Noise in Weight Measurement with
Load Cell" in The Journal of Acoustical Society of Japan, vol. 51,
no. 11, pp. 845-853 (November 1995) (in Japanese)
Hiroshi Kanai, Tomohisa Kimura, and Noriyoshi Chubachi, "Accurate Determination
of Transit Time of Ultrasound in Thin Layers" in Electronics Letters, vol.
31, no. 13, pp. 1109-1110 June 22nd 1995.
Masahiko Takano, Hiroshi Kanai, Noriyoshi Chubachi, Yoshiro Koiwa, Fumiaki
Tezuka, and Mitsuhiro Takahashi, "Measurement and Analysis of Small Vibrations
on Local Aortic Wall for Diagnosis of Arteriosclerosis," in The Journal
of Acoustical Society of Japan, vol. 51, no. 3, pp. 174-181 March 1995.
(in Japanese)
Hiroaki Sato, Hiroshi Kanai, Noriyoshi Chubachi, and Yoshiro Koiwa, "Analysis
of Small Vibrations on the Heart Wall Measured by Ultrasonic Doppler for
Noninvasive Diagnosis of Cardiac Muscle Dysfunction' in Japanese Journal
of Medical Ultrasonics, vol. 22, no. 2, pp. 139-146 February 1995. (in
Japanese)
Ken'ichi Kawabe, Ryoji Murata, Hiroshi Kanai, Noriyoshi Chubachi, and Yoshiro
Koiwa, "In vivo measurement of Local Pulse Wave Velocity on Arterial
Wall of Human Being by Detecting Small Vibrations for Diagnosis of Atherosclerosis,"
in The Journal of Acoustical Society of Japan, vol. 51, no. 2, pp.
111-116 February 1995. (in Japanese)
Ryoji Murata, Hiroshi Kanai, Noriyoshi Chubachi, Yoshiro Koiwa, and Yasuhito
Takeuchi "Measurement of Small Vibrations at Two Adjacent Points on the
Aorta by Controlling the Direction of an Ultrasonic Beam for Noninvasive
Diagnosis of Arteriosclerosis," in Japanese Journal of Medical Ultrasonics,
vol.21, no. 11, pp. 709-711, 1994. (in Japanese)
Moojoon Kim, Hiroshi Kanai, and Noriyoshi Chubachi "Non-Contact Measurement
of Particle Velocity Distribution of Ultrasonic Waves along an Elastic
Bar Using Laser Doppler Velocimetry," in The Journal of the Acoustical
Society of Japan (E), vol. 15, no. 5, pp. 339-344, 1994.
Hiroshi Kanai, Toyohiko Hori, Noriyoshi Chubachi, and Takahiko Ono "Delayed
Block Transfer Function in the Frequency Domain," in IEEE Transactions
on Signal Processing, vol. 42, no. 7, pp. 1669-1684, 1994.
Hiroshi Kanai, Yun-Seok Jang, Noriyoshi Chubachi, and Yoshikatsu Tanahashi
"Power Difference in Spectrum of Sound Radiation before and after Break
of Phantom by Piezoelectric Extracorporeal Shock Wave Lithotripter," in
Japanese Journal of Applied Physics, vol. 33, part1 no, 5B, pp. 3159-3161,
1994.
Hiroshi Kanai, Ken'ichi Kawabe, Masahiko Takano, Ryoji Murata, Noriyoshi
Chubachi, and Yoshiro Koiwa "New Method for Evaluating Local Pulse Wave
Velocity by Measuring Vibrations on Arterial Wall," in Electronics Letters,
vol.30, no. 7, pp. 534-536, 1994.
Kunio Kamimura, Hiroshi Kanai, and Noriyoshi Chubachi "Design of Digital
Filters and their Evaluation for High Speed and High Accuracy Weight Measurement
in Production Line," in The Journal of the Acoustical Society of Japan,
vol.50, no. 4, pp. 279-288, 1994. (in Japanese)
Muhun Park, Hiroshi Kanai, and Noriyoshi Chubachi "In vivo Measurement
of Bending-vibration Propagation-velocity of a Bone Using Ultrasonic Doppler
Method," in The Journal of the Acoustical Society of Japan,vol.50, no. 2,
pp. 103-109, 1994. (in Japanese)
Hiroaki Satoh, Hiroshi Kanai, and Noriyoshi Chubachi "Measurement of Small
Vibration on Heart Wall by Tracking Cardiac Motion Using Dynamic Programming,"
in The Journal of the Acoustical Society of Japan, vol. 50, no. 1,
pp. 11-21, 1994. (in Japanese)
Hiroshi Kanai, Hiroaki Satoh, Kouichi Hirose, and Noriyoshi Chubachi "A
New Method for Measuring Small Local Vibrations in the Heart Using Ultrasound,"
in IEEE Transactions on Biomedical Engineering, vol. 40, no. 12,
pp. 1233-1242, 1993.
Hiroshi Kanai and Noriyoshi Chubachi "Theoretical Evaluation of Bias Error
and Variance in DFT-based Frequency Estimation under Low SNR," in The
Journal of the Acoustical Society of Japan, vol. 49, no. 11, pp. 763-774,
1993. (in Japanese)
Masaki Imai, Hiroshi Kanai, Noriyoshi Chubachi, Shun Oguro, and Hideo Suzuki
"A New Method for Quantitative Measurement of Correlation Defined between
Different Frequency Band Components," in The Journal of the Acoustical
Society of Japan, vol. 49, no. 6, pp. 389-396, 1993. (in Japanese)
Ken'ichi Kawabe, Hiroshi Kanai, and Noriyoshi Chubachi "Accuracy Evaluation
in Ultrasonic-Doppler-based Measurement of Small Vibrations for Acoustical
Diagnosis of the Aortic Wall," in Electronics Letters, vol. 29, no.
10, pp. 915-916, 1993.
Kouichi Hirose, Hiroshi Kanai, and Noriyoshi Chubachi "Tracking of Aortic
Wall by Cross Correlation and Estimation of its Small Vibration Velocity,"
in The Journal of the Acoustical Society of Japan, vol. 48, no. 12,
pp. 863-870, 1992. (in Japanese)
Hiroshi Kanai, Noriyoshi Chubachi, and Toshio Sannomiya "Microdefocusing
Method for Measuring Acoustic Properties Using Acoustic Microscope," in
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control,
vol.39, no. 5, pp. 643-652, 1992.
Hiroshi Kanai, Noriyoshi Chubachi, and Toshio Sannomiya "Non-Contact Measurement
of Acoustic Emission Signals in the 100 MHz Frequency Range Using an Acoustical
Microscope," in Acustica, vol. 76, no. 2, pp. 199-204, 1992.
Hiroshi Kanai, Noriyoshi Chubachi, Ken'iti Kido, Yoshiro Koiwa, Takehiko
Takagi, Junichi Kikuchi, and Tamotsu Takishima "A New Approach to Time
Dependent AR Modeling of Signals and Its Application to Analysis of the
Fourth Heart Sound," in IEEE Transactions on Signal Processing, vol.
40, no. 5, pp. 1198-1205, 1992.
Hiroshi Kanai, Noriyoshi Chubachi, and Toshishige Takeda "Detection of
Acoustic Emission Signals in the Frequency Range up to 100 MHz," in The
Transactions of the Institute of Electrical Engineers of Japan. C, vol.
111-C, no. 12, pp. 631-636, 1991. (in Japanese)
Noriyoshi Chubachi and Hiroshi Kanai "Noncontact AE Measurement System
Using Acoustic Microscope," in Electronics Letters, vol. 27, no.
23, pp. 2104-2105, 1991.
Kang-lyeol Ha, Hiroshi Kanai, Noriyoshi Chubachi, and Kunio Kamimura "A
Basic Study on Nondestructive Evaluation of Potatoes Using Ultrasound,"
in Japanese Journal of Applied Physics, vol. 30, Supplement 30-1,
pp. 80-82, 1991.
Hiroshi Kanai, Yoshihiko Shishido, Noriyoshi Chubachi, Yoshiro Koiwa, Takehiko
Takagi, Jun'iti Kikuchi, Hideyuki Honda, Nobuo Hosi, and Tamotsu Takishima
"Estimation of Acoustic Transfer Function of the Heart by Analyzing the
Heart Sounds Simultaneously Detected on the Chest Wall and in the Esophagus,"
in Japanese Journal of Medical Electronics and Biological Engineering, vol.
29, no. 2, pp. 115-122, 1991. (in Japanese)
Hiroshi Kanai and Ken'iti Kido "Estimation of Input Pulse Locations From
the Response of an All-Pole Transfer System Using Tapered Rank Reduction,"
in IEEE Transactions on Signal Processing, vol. 39, no. 1, pp. 148-159,
1991.
Krishnamachari Jayanthi, Akihiro Suzuki, Hiroshi Kanai, Youko Akiyama,
Yoshiyuki Kawazoe, Masayuki Kimura, Ken'iti Kido, and Keisho Tsukamoto
"Automatic Devanagari Character Recognition Using Structure Analysis,"
in Journal of Japan Society of Information and Knowledge, vol. 1,
no. 1, pp. 25-39, 1990.
Hiroshi Kanai, Ken'iti Kido, Atsushi Suzuki, and Atsushi Kanai "Transfer
Model Excited by Multi-pulse Series and its Application to Analysis of
Transition of Yen/Dollar Exchange Rate," in Journal of the Japan Statistical
Society, vol. 20, no. 2, pp. 255-276, 1990. (in Japanese)
Hiroshi Kanai, Masato Abe, and Ken'iti Kido "A New Method to Arrange an
Additional Sound Source Used in Active Noise Control," in Acustica,
vol. 70, no. 4, pp. 258-264, 1990.
Takahiko Ono, Masanao Ohashi, Toshishige Maeda, and Hiroshi Kanai "Estimation
of the Damping Factor of a Signal Transmission System by Use of a Delayed
Block Coherence Function," in The Journal of the Acoustical Society
of Japan, vol. 46, no. 3, pp. 220-228, 1990. (in Japanese)
Akihiro Suzuki, Hiroshi Kanai, Yoshiyuki Kawazoe, Shozo Makino, and Ken'iti
Kido "A Method of Generating Template Patterns from a Few Sample Patterns
in Character Recognition," in
The Transactions of the Institute of Electronics, Information and Communication Engineers,
vol. J72-D-II, no. 11, pp. 1833-1838, 1989. (in Japanese)
The pdf file of this article is provided under the permission of IEICE with permission number of 06RB0109.
Ken'iti Kido, Hiroshi Kanai, and Masato Abe "Active Reduction of Noise
by Additional Noise Source and Its Limit," in Transactions of the ASME
Journal of Vibration, Acoustics, Stress, and Reliability in Design,
vol. 111, pp. 480-485, 1989.
Akihiro Suzuki, Hiroshi Kanai, Yoshiyuki Kawazoe, Shozo Makino, and Ken'iti
Kido "Printed Devanagari Text Recognition Method by Simultaneous Extraction
and Recognition Procedures," in
The Transactions of the Institute of Electronics, Information and Communication Engineers,
vol. J72-D-II, no. 10, pp. 1643-1649, 1989. (in Japanese)
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Akihiro Suzuki, Hiroshi Kanai, Yoshiyuki Kawazoe, Shozo Makino, and Ken'iti
Kido "A New Discrimination Method for Similar Fonts of Devanagari Character
Set," in
The Transactions of the Institute of Electronics, Information
and Communication Engineers, vol. J72-D-II, no. 9, pp. 1588-1591, 1989.
(in Japanese)
The pdf file of this article is provided under the permission of IEICE with permission number of 06RB0109.
Hiroshi Kanai, Yoshifumi Nagata, Masato Abe, Shozo Makino, and Ken'iti
Kido "A Method to Locate Multiple Sound Sources in One-Dimensional Space
Using Tapered Singular-Value-Decomposition and Pole Estimation," in The
Journal of the Acoustical Society of Japan, vol. 45, no. 9, pp. 681-688,
1989. (in Japanese)
Hiroshi Kanai and Ken'iti Kido "A New Method to Locate Multiple Sound Sources
in One-dimensional Space Based on Estimation of Each Source Sound," in
The American Society of Mechanical Engineers, Pressure Vessels & Piping,
vol.177, pp. 227-232, 1989.
Xueming Gao, Yutaka Kaneko, Hiroshi Kanai, Masato Abe, Shozo Makino, and
Ken'iti Kido "Preliminary Investigation on Shape Estimation of Concrete
Pile by Vibration Analysis," in The Journal of the Acoustical Society
of Japan (E), vol. 10, no. 1, pp. 5-10, 1989.
Hiroshi Kanai and Ken'iti Kido "Estimation of Multipulse Series Driving
of an All-Pole Transfer System (Application of Tapering Window in Singular
Value Decomposition)," in Transactions of the Japan Society of Mechanical
Engineers. Series C, vol. 54, no. 508, pp. 2907-2914, 1988. (in Japanese)
Hiroshi Kanai, Masato Abe, Shozo Makino, and Ken'iti Kido "Simultaneous
Estimation of All-pole Transfer System and Multiple Excitation Pulses from
Autoregressive Process Driven by Multi-pulse," in The Journal of the
Acoustical Society of Japan, vol. 44, no. 7, pp. 503-509, 1988. (in
Japanese)
Akihiro Shima, Chun-Duck Kim, Akihiro Yuasa, Hiroshi Kanai, Masato Abe,
and Ken'iti Kido "A Method of Speech Recording in a Noisy Environment Caused
by Vibration of Panel," in The Journal of the Acoustical Society of
Japan (E), vol. 9, no. 3, pp. 115-121, 1988.
Akihiro Yuasa, Hiroshi Kanai, Masato Abe, and Ken'iti Kido "Detection of
Flaws in Ball Bearings by Analysis of Vibration Signals Detected by Two
Pick-ups," in The Journal of the Acoustical Society of Japan (E), vol.
9, no. 2, pp. 81-87, 1988.
Masato Abe, Akihiro Shima, Takashi Ueda, Hiroshi Kanai, Shozo Makino, and
Ken'iti Kido "High Speed Computing Machine micro KIDOCH for Digital Signal
Processing on Acoustics." in Journal of Information processing,
vol. 28, no. 12, pp. 1306-1317, 1987. (in Japanese)
Hiroshi Kanai, Masato Abe, and Ken'iti Kido, "Accurate Autoregressive Spectrum
Estimation at Low Signal-to-Noise Ratio Using a Phase Matching Technique,"
in IEEE Transactions Acoustics, Speech, and Signal Processing, vol.
ASSP-35, no. 9, pp. 1264-1272, 1987.
Hiroshi Kanai, Masato Abe, and Ken'iti Kido "Estimation of the Surface
Roughness on the Race or Balls of Ball Bearings by Vibration Analysis,"
in Transactions of the American Society Mechanical Engineers Journal
of Vibration, Acoustics, Stress, and Reliability in Design, vol. 109,
pp. 60-68, 1987.
Hiroshi Kanai, Masato Abe, and Ken'iti Kido "Accurate Estimation of the
Surface Roughness on the Rolling Ring in a Ball Bearing by Vibration Analysis,"
in The Journal of the Acoustical Society of Japan (E), vol. 7, no.
6, pp. 343-352, 1986.
Hiroshi Kanai, Masato Abe, and Ken'iti Kido "Detection of Slight Defects
in Ball Bearings by Non-Periodic Analysis," in The Journal of the Acoustical
Society of Japan (E), vol. 7, no. 4, pp. 219-228, 1986.
Hiroshi Kanai, Masato Abe, and Ken'iti Kido "Detection and Discrimination
of Flaws in Ball Bearings by Vibration Analysis," in The Journal of
the Acoustical Society of Japan (E), vol. 7, no. 2, pp. 121-131, 1986.