Research output per year
Research output per year
- 43 results
Search results
-
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.Research output: Contribution to journal › Article › peer-review
Open Access5 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
Open Access3 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
1 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
12 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
139 Scopus citations -
Effects of Beam Steering Angle in Vector Doppler Method with Plane Wave Imaging
Hasegawa, H., Omura, M. & Nagaoka, R., 2022, IUS 2022 - IEEE International Ultrasonics Symposium. IEEE Computer Society, (IEEE International Ultrasonics Symposium, IUS; vol. 2022-October).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review
1 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
Open Access6 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
Open Access3 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
Open Access4 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
Open Access3 Scopus citations -
2021
Advances in ultrasonography: image formation and quality assessment
Hasegawa, H., 2021/10, In: Journal of Medical Ultrasonics. 48, 4, p. 377-389 13 p.Research output: Contribution to journal › Review article › peer-review
Open Access20 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
5 Scopus citations -
Correction to: Measurement of flow velocity vectors in carotid artery using plane wave imaging with repeated transmit sequence (Journal of Medical Ultrasonics, (2021), 48, 4, (417-427), 10.1007/s10396-021-01113-2)
Hasegawa, H., Mozumi, M., Omura, M., Nagaoka, R. & Saito, K., 2021/10, In: Journal of Medical Ultrasonics. 48, 4, p. 429 1 p.Research output: Contribution to journal › Comment/debate
Open Access -
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.Research output: Contribution to journal › Article › peer-review
7 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
8 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
2 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
4 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
3 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
8 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
Open Access5 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
11 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
8 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
18 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
Open Access21 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
18 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
12 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
5 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
Open Access9 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
12 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
Open Access9 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
7 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
11 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
Open Access13 Scopus citations -
Construction of an ultrasound phantom with micrometer-sized wall-less vessels
Meirza, B., Hasegawa, H., Evertsson, M., Sjostrand, S. & Cinthio, M., 2019/10, 2019 IEEE International Ultrasonics Symposium, IUS 2019. IEEE Computer Society, p. 1209-1211 3 p. 8926090. (IEEE International Ultrasonics Symposium, IUS; vol. 2019-October).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review
4 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
6 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
33 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
13 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
17 Scopus citations -
Recent Developments in Adaptive Beamforming
Hasegawa, H., 2019/10, 2019 IEEE International Ultrasonics Symposium, IUS 2019. IEEE Computer Society, p. 1063-1066 4 p. 8925830. (IEEE International Ultrasonics Symposium, IUS; vol. 2019-October).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review
1 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
15 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
30 Scopus citations -
Very high frame rate ultrasound for medical diagnostic imaging
Hasegawa, H., 2019/11/11, Advances in Electrical and Electronic Engineering: From Theory to Applications (Series 2) - Proceedings of the International Conference of Electrical and Electronic Engineering, ICon3E 2019. Wahab, M. H. A., Audah, L., Jamail, N. A. M., Hanafi, D., Soon, C. F. & Ahmad, N. (eds.). American Institute of Physics Inc., 020015. (AIP Conference Proceedings; vol. 2173).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review
Open Access2 Scopus citations -
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.Research output: Contribution to journal › Article › peer-review
Open Access7 Scopus citations