年別の研究成果
年別の研究成果
- 37 件
検索結果
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2023
Effect of Clutter Filter in High-Frame-Rate Ultrasonic Backscatter Coefficient Analysis
Omura, M., Yagi, K., Nagaoka, R., Yoshida, K., Yamaguchi, T. & Hasegawa, H., 2023/03, In: Sensors. 23, 5, 2639.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
Open Access5 被引用数 (Scopus) -
Nakagami parametric image for evaluation of the degree of thermal denaturation inside porcine liver induced ex vivo by radiofrequency ablation
Takeuchi, M., Sakai, T., Oshima, Y., Kojima, Y., Mori, K., Omura, M., Nagaoka, R. & Hasegawa, H., 2023/07/01, In: Japanese Journal of Applied Physics. 62, SJ, SJ1018.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
Open Access3 被引用数 (Scopus) -
Ultrasonic envelope statistical analysis in motion compensated images during temperature change
Omura, M., Takeuchi, M., Nagaoka, R. & Hasegawa, H., 2023/07/01, In: Japanese Journal of Applied Physics. 62, SJ1036.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
1 被引用数 (Scopus) -
2022
Characterization of blood mimicking fluid with ultrafast ultrasonic and optical image velocimeters
Omura, M., Nagaoka, R., Yagi, K., Yoshida, K., Yamaguchi, T. & Hasegawa, H., 2022/07/01, In: Japanese Journal of Applied Physics. 61, SG, SG1067.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
12 被引用数 (Scopus) -
Complex-Valued Neural Networks: A Comprehensive Survey
Lee, C. Y., Hasegawa, H. & Gao, S., 2022/08/01, In: IEEE/CAA Journal of Automatica Sinica. 9, 8, p. 1406-1426 21 p.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
136 被引用数 (Scopus) -
Improving image contrast and accuracy in velocity estimation by convolution filters for intracardiac blood flow imaging
Mozumi, M., Nagaoka, R. & Hasegawa, H., 2022/03, In: Ultrasonics. 120, 106650.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
Open Access6 被引用数 (Scopus) -
Investigation on effect of transmit condition on ultrasonic measurement of 2D motion velocity
Yano, T., Mozumi, M., Omura, M., Nagaoka, R. & Hasegawa, H., 2022/07/01, In: Japanese Journal of Applied Physics. 61, SG, SG1053.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
Open Access3 被引用数 (Scopus) -
Investigation on improving performance of adaptive beamformer by statistical analysis of ultrasonic echoes
Akamatsu, T., Mozumi, M., Omura, M., Nagaoka, R. & Hasegawa, H., 2022/07/01, In: Japanese Journal of Applied Physics. 61, SG, SG1040.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
Open Access4 被引用数 (Scopus) -
Two-Dimensional Wavenumber Analysis Implemented in Ultrasonic Vector Doppler Method with Focused Transmit Beams
Hasegawa, H., Omura, M., Nagaoka, R. & Saito, K., 2022/12, In: Sensors. 22, 24, 9787.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
Open Access3 被引用数 (Scopus) -
2021
A study on understanding the physical mechanism of change in ultrasonic envelope statistical property during temperature elevation
Omura, M., Takeuchi, M., Nagaoka, R. & Hasegawa, H., 2021/06, In: Medical Physics. 48, 6, p. 3042-3054 13 p.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
5 被引用数 (Scopus) -
Effects from correction of speed of sound in transmit and receive beamforming using focus beam
Nagaoka, R., Yoshizawa, S., Umemura, S. I. & Hasegawa, H., 2021/07, In: Japanese Journal of Applied Physics. 60, SDDE19.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
7 被引用数 (Scopus) -
Impact of spacing of ultrasound receiving beams on estimation of 2D motion velocity
Mozumi, M., Omura, M., Nagaoka, R., Cinthio, M. & Hasegawa, H., 2021/07, In: Japanese Journal of Applied Physics. 60, SD, SDDE07.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
8 被引用数 (Scopus) -
Improvement of spatial resolution of medical ultrasound images by constrained least-square method
Hasegawa, H., Mozumi, M., Omura, M. & Nagaoka, R., 2021/07, In: Japanese Journal of Applied Physics. 60, SDDE16.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
2 被引用数 (Scopus) -
Novel Evidence Concerning Lacrimal Sac Movement Using Ultra-High-Frequency Ultrasound Examinations of Lacrimal Drainage Systems
Bohman, E., Berggren, J., Bunke, J., Albinsson, J., Engelsberg, K., Dahlstrand, U., Hult, J., Hasegawa, H., Cinthio, M. & Sheikh, R., 2021/07/01, In: Ophthalmic Plastic and Reconstructive Surgery. 37, 4, p. 334-340 7 p.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
4 被引用数 (Scopus) -
Preliminary investigation on clutter filtering based on deep learning
Wang, H., Gao, S., Mozumi, M., Omura, M., Nagaoka, R. & Hasegawa, H., 2021/07, In: Japanese Journal of Applied Physics. 60, SDDE21.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
3 被引用数 (Scopus) -
Statistical Analysis of Ultrasonic Scattered Echoes Enables the Non-invasive Measurement of Temperature Elevations inside Tumor Tissue during Oncological Hyperthermia
Takeuchi, M., Sakai, T., Andocs, G., Takanaka, T., Taka, M., Yamashita, K., Kawahara, M., Nojiri, T., Tanaka, A., Norishima, A., Omoto, Y., Omura, M., Nagaoka, R., Takao, K. & Hasegawa, H., 2021/11, In: Ultrasound in Medicine and Biology. 47, 11, p. 3301-3309 9 p.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
8 被引用数 (Scopus) -
Study on estimation of surface roughness by separation of reflection and backscattering components using ultrasonic synthetic aperture imaging
Nagata, K., Nagaoka, R., Wilhjelm, J. E. & Hasegawa, H., 2021/07, In: Japanese Journal of Applied Physics. 60, SDDE09.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
Open Access5 被引用数 (Scopus) -
2020
Accuracy evaluation of 3D velocity estimation by multi-frequency phase-sensitive motion estimator under various specifications of matrix array probe
Nunome, S., Nagaoka, R. & Hasegawa, H., 2020/07/01, In: Japanese Journal of Applied Physics. 59, SKKE01.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
11 被引用数 (Scopus) -
Anti-Aliasing method for ultrasonic 2D phase-sensitive motion estimator
Mozumi, M., Nagaoka, R., Cinthio, M. & Hasegawa, H., 2020/07/01, In: Japanese Journal of Applied Physics. 59, SK, SKKE20.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
8 被引用数 (Scopus) -
Basic study on estimation method of wall shear stress in common carotid artery using blood flow imaging
Nagaoka, R., Ishikawa, K., Mozumi, M., Cinthio, M. & Hasegawa, H., 2020/07/01, In: Japanese Journal of Applied Physics. 59, SKKE16.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
18 被引用数 (Scopus) -
Converting Coherence to Signal-to-noise Ratio for Enhancement of Adaptive Ultrasound Imaging
Hasegawa, H. & Nagaoka, R., 2020/01/01, In: Ultrasonic Imaging. 42, 1, p. 27-40 14 p.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
Open Access20 被引用数 (Scopus) -
Estimation of speed of sound using coherence factor and signal-to-noise ratio for improvement of performance of ultrasonic beamformer
Sannou, F., Nagaoka, R. & Hasegawa, H., 2020/07/01, In: Japanese Journal of Applied Physics. 59, SKKE14.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
18 被引用数 (Scopus) -
Improvement of performance of minimum variance beamformer by introducing cross covariance estimate
Hasegawa, H. & Nagaoka, R., 2020/04/01, In: Journal of Medical Ultrasonics. 47, 2, p. 203-210 8 p.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
12 被引用数 (Scopus) -
Modified high-resolution wavenumber analysis for detection of pulse wave velocity using coefficient of variation of arterial wall acceleration waveforms
Nagaoka, R. & Hasegawa, H., 2020/04/01, In: Journal of Medical Ultrasonics. 47, 2, p. 167-177 11 p.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
5 被引用数 (Scopus) -
Preliminary study on the separation of specular reflection and backscattering components using synthetic aperture beamforming
Nagaoka, R., Wilhjelm, J. E. & Hasegawa, H., 2020/10, In: Journal of Medical Ultrasonics. 47, 4, p. 493-500 8 p.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
Open Access9 被引用数 (Scopus) -
Speckle reduction of medical ultrasound images using deep learning with fully convolutional network
Ando, K., Nagaoka, R. & Hasegawa, H., 2020/07/01, In: Japanese Journal of Applied Physics. 59, SKKE06.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
12 被引用数 (Scopus) -
Temperature elevation in tissue detected in vivo based on statistical analysis of ultrasonic scattered echoes
Takeuchi, M., Sakai, T., Andocs, G., Takao, K., Nagaoka, R. & Hasegawa, H., 2020/12/01, In: Scientific Reports. 10, 1, 9030.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
Open Access9 被引用数 (Scopus) -
Temporal averaging introduced in linear regression beamforming for improvement of contrast-to-noise ratio
Hasegawa, H. & Nagaoka, R., 2020/07/01, In: Japanese Journal of Applied Physics. 59, SKKE12.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
7 被引用数 (Scopus) -
Validation of differences in backscatter coefficients among four ultrasound scanners with different beamforming methods
Omura, M., Hasegawa, H., Nagaoka, R., Yoshida, K. & Yamaguchi, T., 2020/01/01, In: Journal of Medical Ultrasonics. 47, 1, p. 35-46 12 p.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
11 被引用数 (Scopus) -
2019
Comparison of ultrasonic motion estimators for vascular applications
Miyajo, A., Nagaoka, R. & Hasegawa, H., 2019, In: Japanese Journal of Applied Physics. 58, SG, SGGE16.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
Open Access13 被引用数 (Scopus) -
Identification of vascular lumen by singular value decomposition filtering on blood flow velocity distribution
Nagaoka, R. & Hasegawa, H., 2019/04/15, In: Journal of Medical Ultrasonics. 46, 2, p. 187-194 8 p.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
6 被引用数 (Scopus) -
Initial phantom study on estimation of speed of sound in medium using coherence among received echo signals
Hasegawa, H. & Nagaoka, R., 2019/07/12, In: Journal of Medical Ultrasonics. 46, 3, p. 297-307 11 p.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
33 被引用数 (Scopus) -
Investigation of initial value dependence in the statistical analysis of ultrasonic scattered echoes for the non-invasive estimation of temperature distribution in biological tissue
Takeuchi, M., Matsui, Y., Sakai, T., Andocs, G., Nagaoka, R. & Hasegawa, H., 2019, In: Japanese Journal of Applied Physics. 58, SG, SGGE09.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
13 被引用数 (Scopus) -
Investigation of the estimation accuracy of two-step block matching methods using envelope and RF signals for two-dimensional blood flow vector imaging
Nagaoka, R., Mozumi, M. & Hasegawa, H., 2019, In: Japanese Journal of Applied Physics. 58, SG, SGGE10.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
17 被引用数 (Scopus) -
Singular value decomposition filter for speckle reduction in adaptive ultrasound imaging
Hasegawa, H. & Nagaoka, R., 2019, In: Japanese Journal of Applied Physics. 58, SG, SGGE06.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
15 被引用数 (Scopus) -
Utilization of singular value decomposition in high-frame-rate cardiac blood flow imaging
Mozumi, M., Nagaoka, R. & Hasegawa, H., 2019, In: Japanese Journal of Applied Physics. 58, SG, SGGE02.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
30 被引用数 (Scopus) -
2018
Iterative 2D tissue motion tracking in ultrafast ultrasound imaging
Albinsson, J., Hasegawa, H., Takahashi, H., Boni, E., Ramalli, A., Ahlgren, A. R. & Cinthio, M., 2018/04/25, In: Applied Sciences (Switzerland). 8, 5, 662.研究成果: ジャーナルへの寄稿 › 学術論文 › 査読
Open Access7 被引用数 (Scopus)