Search Results - "Yoshiro Koiwa, Yoshiro Koiwa"

Evaluation of Plaque Stabilization by Fluvastatin with Carotid Intima- Medial Elasticity Measured by a Transcutaneous Ultrasonic-Based Tissue Characterization System by Yamagishi, Toshio, Kato, Makoto, Koiwa, Yoshiro, Omata, Ken, Hasegawa, Hideyuki, Kanai, Hiroshi

“…Aim: As an approach to tissue characterization, we attempted to classify in vivo carotid plaque tissues in terms of arterial wall elasticity instead of…”
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Carotid arterial elasticity is a sensitive atherosclerosis value reflecting visceral fat accumulation in obese subjects by Tokita, Ai, Ishigaki, Yasushi, Okimoto, Hisashi, Hasegawa, Hideyuki, Koiwa, Yoshiro, Kato, Makoto, Ishihara, Hisamitsu, Hinokio, Yoshinori, Katagiri, Hideki, Kanai, Hiroshi, Oka, Yoshitomo

“…Abstract Background We previously reported the arterial elasticity value we measured to reflect the characteristic features of vessel walls, and to possibly be…”
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Impact of Lifestyle-Related Diseases on Carotid Arterial Wall Elasticity as Evaluated by an Ultrasonic Phased-Tracking Method in Japanese Subjects by Yamagishi, Toshio, Kato, Makoto, Koiwa, Yoshiro, Hasegawa, Hideyuki, Kanai, Hiroshi

“…Aim: We investigated the relationship between coronary risk factors and the intima-media thickness (IMT) and wall elasticity of carotid arteries. A new…”
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Cross-Sectional Elastic Imaging of Arterial Wall Using Intravascular Ultrasonography by Hitoshi Mita, Hitoshi Mita, Hiroshi Kanai, Hiroshi Kanai, Yoshiro Koiwa, Yoshiro Koiwa, Masataka Ichiki, Masataka Ichiki, Fumiaki Tezuka, Fumiaki Tezuka

“…There have been several studies on the imaging of the distribution of the elasticity of the arterial wall using intravascular ultrasonography (IVUS). In those…”
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Usefulness of measurement of carotid arterial wall elasticity distribution in detection of early-stage atherosclerotic lesions caused by cigarette smoking by Yamagishi, Toshio, Kato, Makoto, Koiwa, Yoshiro, Hasegawa, Hideyuki, Kanai, Hiroshi

“…The aim of this study was to evaluate early-stage changes in the arterial wall caused by smoking. A newly developed real-time ultrasonic measurement system was…”
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Evaluating the regional elastic modulus of a cylindrical shell with nonuniform wall thickness by Hasegawa, Hideyuki, Kanai, Hiroshi, Hoshimiya, Nozomu, Koiwa, Yoshiro

“…For noninvasive diagnosis of atherosclerosis, we attempted to evaluate the elasticity of the arterial wall by measuring small changes in thickness caused by…”
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Modified Phased Tracking Method for Measurement of Change in Thickness of Arterial Wall by Hasegawa, Hideyuki, Kanai, Hiroshi, Koiwa, Yoshiro

“…In this study, the change in thickness of the arterial wall caused by the heartbeat was measured by the phased tracking method [IEEE Trans. UFFC. 43 (1996)…”
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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 by Hideyuki Hasegawa, Hideyuki Hasegawa, Hiroshi Kanai, Hiroshi Kanai, Nozomu Hoshimiya, Nozomu Hoshimiya, Noriyoshi Chubachi, Noriyoshi Chubachi, Yoshiro Koiwa, Yoshiro Koiwa

“…For the diagnosis of the early stages of atherosclerosis, it is important to evaluate the local acoustic characteristics of the arterial wall. For this…”
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Measurement of Change in Wall Thickness of Cylindrical Shell Due to Cyclic Remote Actuation for Assessment of Viscoelasticity of Arterial Wall by Hasegawa, Hideyuki, Kanai, Hiroshi, Koiwa, Yoshiro, Butler, James P.

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Fetal myocardial thickening measured by ultrasonic-based technique called 'phased-tracking method' by Kunii, Shutaro, Sugawara, Junichi, Kimura, Yoshitaka, Imai, Noriaki, Chisaka, Hiroshi, Hasegawa, Hideyuki, Koiwa, Yoshiro, Kanai, Hiroshi, Okamura, Kunihiro

“…To evaluate fetal myocardial movement by using newly developed ultrasonic technique. We analyzed 50 normal fetuses between 25 and 41 weeks' gestation for…”
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Left ventricular transmural systolic function by high-sensitivity velocity measurement "phased-tracking method" across the septum in doxorubicin cardiomyopathy by Koiwa, Yoshiro, Kanai, Hiroshi, Hasegawa, Hideyuki, Saitoh, Yoshiko, Shirato, Kunio

“…The clinical usefulness of doxorubicin is limited by doxorubicin-induced cardiomyopathy (DoxCM). The prognosis of this disorder is poor, and a sensitive…”
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Measurement of Rapid Variation in Ultrasound Backscattering During Change in Thickness of Tissue Phantom by Kanai, Hiroshi, Koiwa, Yoshiro, Katsumata, Shin'ichi, Izumi, Naoyuki, Tanaka, Motonao

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Cardiac Twitch Properties Simulated by Three States Model by Honda, Hideyuki, Naya, Taihei, Koiwa, Yoshiro

“…We examined whether the three states model can explain the systolic and relaxation properties of cardiac muscle to clarify what factors affect these…”
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Systolic Heterogeneity of Transmural Myocardial Function in Normal Subjects: Physiological Functional Heterogeneity by KOIWA, YOSHIRO, KAMADA, HIDEICHI, INOSE, MIKIO, SHIRATO, KUNIO, SAITO, YOSHIKO, HASEGAWA, HIDEYUKI, KANAI, HIROSHI

“…Because of the lack of a clinical method for assessing the transmural myocardial function, few studies on the heterogeneity during the myocardial…”
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In Vivo Measurement of Small Velocity Signals and Change in Thickness of the Heart Walls by Kanai, Hiroshi, Koiwa, Yoshiro, Saito, Yoshiko, Susukida, Ikuko, MotonaoTanaka, MotonaoTanaka

“…We have previously developed a new method for accurately tracking the movement of the heart wall based on both the phase and magnitude of the demodulated…”
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Simultaneous measurement of vibrations on arterial wall upstream and downstream of arteriostenosis lesion and their analysis by Sunagawa, Kazuhiro, Kanai, Hiroshi, Koiwa, Yoshiro, Nitta, Keiko, Tanaka, Motonao

“…Acute myocardial infarction and cerebral infarction are generally known to be caused primarily by the rupture of atherosclerotic plaques. It is thus necessary…”
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Reduction of Influence of Decrease in Signal-to-Noise Ratio in Measurement of Change in Thickness of Arterial Wall Due to Heartbeat by Hasegawa, Hideyuki, Kanai, Hiroshi, Hoshimiya, Nozomu, Koiwa, Yoshiro

“…To diagnose early-stage atherosclerosis, for the local evaluation of the elasticity of the arterial wall it is necessary to increase the spatial resolution in…”
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Elasticity imaging of atheroma with transcutaneous ultrasound: Preliminary study by KANAI, Hiroshi, HASEGAWA, Hideyuki, ICHIKI, Masataka, TEZUKA, Fumiaki, KOIWA, Yoshiro

“…Knowledge of the physical properties of atherosclerotic plaque is essential when evaluating its vulnerability in a clinical setting. Such knowledge, however,…”
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Modification of human left ventricular relaxation by small-amplitude, phase-controlled mechanical vibration on the chest wall by KOIWA, Y, HONDA, H, TAKAGI, T, KIKUCHI, J.-I, HOSHI, N, TAKISHIMA, T

“…Direct clinical manipulation to improve an impairment of left ventricular (LV) relaxation has not been reported. We investigated whether the LV relaxation rate…”
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Theoretical treatment of striated muscle: Dynamic extension of four-state model by Honda, H, Koiwa, Y, Shirato, K

“…We constructed a muscle model, based on the model first proposed by Gray and Gonda [6,7), that simulates the twitch contraction of striated muscle. Their…”
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