Ryo Nagaoka

2011

Imaging of sebaceous glands of human skin by three-dimensional ultrasound microscopy and its relation to elasticity

Kumagai, K., Koike, H., Kudo, Y., Nagaoka, R., Kubo, K., Kobayashi, K. & Saijo, Y., 2011, 33rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS 2011. p. 7199-7202 4 p. 6091819. (Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS).

研究成果: 書籍の章/レポート/会議録 › 会議への寄与 › 査読

8 被引用数 (Scopus)

2012

Elasticity of artificial skin by measuring displacement induced by acoustic radiation force

Nagaoka, R., Izumi, T., Kubo, K., Kobayashi, K. & Saijo, Y., 2012, 2012 IEEE International Ultrasonics Symposium, IUS 2012. p. 1378-1381 4 p. 6562274. (IEEE International Ultrasonics Symposium, IUS).

研究成果: 書籍の章/レポート/会議録 › 会議への寄与 › 査読

High-Resolution Ultrasound Imaging of Human Skin In Vivo by Using Three-Dimensional Ultrasound Microscopy

Kumagai, K., Koike, H., Nagaoka, R., Sakai, S., Kobayashi, K. & Saijo, Y., 2012/10, In: Ultrasound in Medicine and Biology. 38, 10, p. 1833-1838 6 p.

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)

2013

Relation between morphology of sebaceous glands inside human skin and viscoelastic properties

Nagaoka, R., Kobayashi, K. & Saijo, Y., 2013, 2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2013. p. 1112-1115 4 p. 6609700. (Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS).

研究成果: 書籍の章/レポート/会議録 › 会議への寄与 › 査読

2 被引用数 (Scopus)

Ultrasonic measurement of microdisplacement induced by acoustic radiation force

Nagaoka, R., Izumi, T., Komatsu, Y., Kobayashi, K. & Saijo, Y., 2013/07, In: Japanese Journal of Applied Physics. 52, 7 PART 2, 07HF21.

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)

2014

Beam profile measurement and optimization in the high-frequency annular array transducer

Tada, A., Nagaoka, R., Kobayashi, K. & Saijo, Y., 2014/08/17, In: Transactions of Japanese Society for Medical and Biological Engineering. 52, p. O-355-O-356

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

Development of acoustic microscope for biological tissue and its application

Arakawa, M., Shikama, J., Yoshida, K., Nagaoka, R., Kobayashi, K. & Saijo, Y., 2014/08/17, In: Transactions of Japanese Society for Medical and Biological Engineering. 52, p. SY-5-SY-6

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

Development of optical and acoustic hybrid microscope for visualization of a single cell

Shikama, J., Sato, Y., Kobayashi, K., Yoshida, K., Nagaoka, R. & Saijo, Y., 2014/08/17, In: Transactions of Japanese Society for Medical and Biological Engineering. 52, p. O-345-O-346

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

High frame-rate estimation of two-dimensional blood flow vector by bidirectional doppler ultrasound with parallel beamforming

Masuno, G., Nagaoka, R., Akagawa, O., Sasaki, S. & Yoshizawa, S., 2014/08/17, In: Transactions of Japanese Society for Medical and Biological Engineering. 52, p. O-331-O-332

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

Measurement of acoustic parameters of single cell by ultrasound microscope

Yoshida, K., Abuhabsah, R., Pawlicki, A. D., Shikama, J., Nagaoka, R., Kobayashi, K., Saijo, Y. & O'Brien, W. D., 2014/08/17, In: Transactions of Japanese Society for Medical and Biological Engineering. 52, p. O-341-O-342

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

Measurement of propagation wave velocity of thyroid induced by pulsation

Nagaoka, R., Yoshizawa, S., Umemura, S. I., Saijo, Y. & Kobayashi, K., 2014/10/20, IEEE International Ultrasonics Symposium, IUS. IEEE Computer Society, p. 1136-1139 4 p. 6931776. (IEEE International Ultrasonics Symposium, IUS).

研究成果: 書籍の章/レポート/会議録 › 会議への寄与 › 査読

Measurement of sound speed of skin by using ultrasonic microscopy

Horie, M., Nagaoka, R., Kobayashi, K., Yamazaki, K. & Saijo, Y., 2014/08/17, In: Transactions of Japanese Society for Medical and Biological Engineering. 52, p. O-323-O-324

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

Multiparametric characterization of a single cell by an ultrasound and optical combined microscope

Saijo, Y., Shikama, J., Yoshida, K., Nagaoka, R., Arakawa, M. & Kobayashi, K., 2014/10/20, IEEE International Ultrasonics Symposium, IUS. IEEE Computer Society, p. 727-730 4 p. 6932111. (IEEE International Ultrasonics Symposium, IUS).

研究成果: 書籍の章/レポート/会議録 › 会議への寄与 › 査読

'Sonocytometry' - Novel diagnostic method of ultrasonic differentiation of cells in blood flow

Komatsu, Y., Nagaoka, R., Funamoto, K. I., Hayase, T., Masauzi, N., Kanai, H. & Saijo, Y., 2014/11/02, 2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2014. Institute of Electrical and Electronics Engineers Inc., p. 2761-2764 4 p. 6944195. (2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2014).

研究成果: 書籍の章/レポート/会議録 › 会議への寄与 › 査読

5 被引用数 (Scopus)

Studies on the basic technology of “Sono-cytometry”

Komatsu, Y., Nagaoka, R., Funamoto, K., Hayase, T., Masauzi, N., Kanai, H. & Saijo, Y., 2014/08/17, In: Transactions of Japanese Society for Medical and Biological Engineering. 52, p. O-351-O-352

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

Two-dimensional blood flow vectors obtained with bidirectional Doppler ultrasound

Masuno, G., Nagaoka, R., Omori, A., Ishikawa, Y., Akagawa, O., Arakawa, M. & Saijo, Y., 2014/11/02, 2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2014. Institute of Electrical and Electronics Engineers Inc., p. 5093-5096 4 p. 6944770. (2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2014).

研究成果: 書籍の章/レポート/会議録 › 会議への寄与 › 査読

1 被引用数 (Scopus)

Visualization of pulse propagation with high frame rate spatial compound imaging

Nagaoka, R., Masuno, G., Kobayashi, K., Yoshizawa, S., Umemura, S. I. & Saijo, Y., 2014/08/17, In: Transactions of Japanese Society for Medical and Biological Engineering. 52, p. O-353-O-354

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

2015

Adaptive spatial filtering with principal component analysis for biomedical photoacoustic imaging

Nagaoka, R., Yamazaki, R. & Saijo, Y., 2015, In: Physics Procedia. 70, p. 1161-1164 4 p.

研究成果: ジャーナルへの寄稿 › 会議記事 › 査読

Open Access

2 被引用数 (Scopus)

Basic study of intrinsic elastography: Relationship between tissue stiffness and propagation velocity of deformation induced by pulsatile flow

Nagaoka, R., Iwasaki, R., Arakawa, M., Kobayashi, K., Yoshizawa, S., Umemura, S. I. & Saijo, Y., 2015/07/01, In: Japanese Journal of Applied Physics. 54, 7, 07HF08.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

22 被引用数 (Scopus)

Development of an ultrasound microscope combined with optical microscope for multiparametric characterization of a single cell

Arakawa, M., Shikama, J., Yoshida, K., Nagaoka, R., Kobayashi, K. & Saijo, Y., 2015/09/01, In: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 62, 9, p. 1615-1622 8 p., 7272460.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

9 被引用数 (Scopus)

Effects of cavitation-enhanced heating in high-intensity focused ultrasound treatment on shear wave imaging

Iwasaki, R., Nagaoka, R., Takagi, R., Goto, K., Yoshizawa, S., Saijo, Y. & Umemura, S. I., 2015/07/01, In: Japanese Journal of Applied Physics. 54, 7, 07HF11.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

23 被引用数 (Scopus)

Intrinsic elastography and its dependence on arterial flow volume

Nagaoka, R., Kobayashi, K., Yoshizawa, S., Umemura, S. I. & Saijo, Y., 2015/11/04, 2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2015. Institute of Electrical and Electronics Engineers Inc., p. 6309-6312 4 p. 7319835. (Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS; vol. 2015-November).

研究成果: 書籍の章/レポート/会議録 › 会議への寄与 › 査読

Measurement of regional pulse-wave velocity using spatial compound imaging of the common carotid artery in vivo

Nagaoka, R., Masuno, G., Kobayashi, K., Yoshizawa, S., Umemura, S. I. & Saijo, Y., 2015, In: Ultrasonics. 55, 1, p. 92-103 12 p.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

40 被引用数 (Scopus)

Measurement of skin elasticity using high frequency ultrasound elastography with intrinsic deformation induced by arterial pulsation

Nagaoka, R. & Saijo, Y., 2015/01/01, Interface Oral Health Science 2014: Innovative Research on Biosis-Abiosis Intelligent Interface. Springer Japan, p. 245-255 11 p.

研究成果: 書籍の章/レポート/会議録 › 章 › 査読

Open Access

4 被引用数 (Scopus)

Monitoring of lesions induced by cavitation-enhanced high-intensity focused ultrasound using shear wave elastography

Iwasaki, R., Nagaoka, R., Saijo, Y., Umemura, S. I., Takagi, R., Jimbo, H. & Yoshizawa, S., 2015/11/13, 2015 IEEE International Ultrasonics Symposium, IUS 2015. Institute of Electrical and Electronics Engineers Inc., 7329182. (2015 IEEE International Ultrasonics Symposium, IUS 2015).

研究成果: 書籍の章/レポート/会議録 › 会議への寄与 › 査読

1 被引用数 (Scopus)

2016

Monitoring of high-intensity focused ultrasound treatment by shear wave elastography induced by two-dimensional-array therapeutic transducer

Iwasaki, R., Takagi, R., Nagaoka, R., Jimbo, H., Yoshizawa, S., Saijo, Y. & Umemura, S. I., 2016/07, In: Japanese Journal of Applied Physics. 55, 7, 07KF05.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

22 被引用数 (Scopus)

Perspective imaging of flow in arterial model obtained with continuous wave Doppler focusing technique

Nagaoka, R., Sasaki, K., Zama, S., Nagone, M., Nagai, H., Takeuchi, Y. & Saijo, Y., 2016/10/13, 2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2016. Institute of Electrical and Electronics Engineers Inc., p. 2315-2318 4 p. 7591193. (Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS; vol. 2016-October).

研究成果: 書籍の章/レポート/会議録 › 会議への寄与 › 査読

1 被引用数 (Scopus)

Two-dimensional blood flow vector and wall shear stress of carotid artery obtained with dual-angle Doppler method

Akagawa, O., Fukazu, K., Nagaoka, R. & Saijo, Y., 2016/11/01, 2016 IEEE International Ultrasonics Symposium, IUS 2016. IEEE Computer Society, 7728523. (IEEE International Ultrasonics Symposium, IUS; vol. 2016-November).

研究成果: 書籍の章/レポート/会議録 › 会議への寄与 › 査読

3 被引用数 (Scopus)

2017

Development of Real-Time 3-D Photoacoustic Imaging System Employing Spherically Curved Array Transducer

Nagaoka, R., Tabata, T., Takagi, R., Yoshizawa, S., Umemura, S. I. & Saijo, Y., 2017/08, In: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 64, 8, p. 1223-1233 11 p., 7954694.

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)

Differentiation of vein and lymphatic vessel by photoacoustic imaging system with parabolic array transducer and tunable laser

Tabata, T., Nagaoka, R., Umemura, S., Saijo, Y. & Yoshizawa, S., 2017/10/31, 2017 IEEE International Ultrasonics Symposium, IUS 2017. IEEE Computer Society, 8091574. (IEEE International Ultrasonics Symposium, IUS).

研究成果: 書籍の章/レポート/会議録 › 会議への寄与 › 査読

Differentiation of vein and lymphatic vessel by photoacoustic imaging system with parabolic array transducer and tunable laser

Tabata, T., Nagaoka, R., Yoshizawa, S., Umernura, S. I. & Saijo, Y., 2017/10/31, 2017 IEEE International Ultrasonics Symposium, IUS 2017. IEEE Computer Society, 8091669. (IEEE International Ultrasonics Symposium, IUS).

研究成果: 書籍の章/レポート/会議録 › 会議への寄与 › 査読

Notice of Removal: Visualization of the microcirculation in micro vasculatures by photoacoustic tomography with high frequency spherical array transducer

Nagaoka, R., Tabata, T., Takagi, R., Yoshizawa, S., Umemura, S. I. & Saijo, Y., 2017/10/31, 2017 IEEE International Ultrasonics Symposium, IUS 2017. IEEE Computer Society, 8092091. (IEEE International Ultrasonics Symposium, IUS; vol. 0).

研究成果: 書籍の章/レポート/会議録 › 会議への寄与 › 査読

1 被引用数 (Scopus)

Sparse-representation-based denoising of photoacoustic images

Ul Haq, I., Nagaoka, R., Siregar, S. & Saijo, Y., 2017/07/10, In: Biomedical Physics and Engineering Express. 3, 4, 045014.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

16 被引用数 (Scopus)

2018

2-D blood flow vector imaging in common carotid artery based on 2-step block matching method using envelope and RF signals

Nagaoka, R., Mozumi, M. & Hideyuki Hasegawa, A., 2018.

研究成果: 会議への寄与 › 学会発表

A method for the design of ultrasonic devices for scanning acoustic microscopy using impulsive signals

Arakawa, M., Kanai, H., Ishikawa, K., Nagaoka, R., Kobayashi, K. & Saijo, Y., 2018/03, In: Ultrasonics. 84, p. 172-179 8 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)

Basic study of improvement of axial resolution and suppression of time side lobe by phase-corrected Wiener filtering in photoacoustic tomography

Nagaoka, R., Yoshizawa, S., Umemura, S. I. & Saijo, Y., 2018/07, In: Japanese Journal of Applied Physics. 57, 7, 07LD11.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

10 被引用数 (Scopus)

Basic study on ultrasonic imaging using piezoelectric elements with polarization-inverted layer

Nagaoka, R., Umemura, S.-I., Saijo, Y. & Hideyuki Hasegawa, A., 2018.

研究成果: 会議への寄与 › 学会発表

Coherence Factorを用いた低周波イメージングにおける方位分解能の改善

新川裕也, 長岡　亮 & 長谷川英之, 2018.

研究成果: 会議への寄与 › 学会発表

Comparative study of conventional linear scan, synthetic aperture imaging, and multi-angle compound imaging

Nagata, K., von Barm, R., Nagaoka, R., E. Wilhjelm, J. & Hasegawa, H., 2018.

研究成果: 会議への寄与 › 学会発表

Deduction of two-dimensional blood flow vector by dual angle diverging waves from a cardiac sector probe

Maeda, M., Nagaoka, R., Ikeda, H., Yaegashi, S. & Saijo, Y., 2018/07, In: Japanese Journal of Applied Physics. 57, 7, 07LF02.

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)

Estimation of Three-dimensional Blood Flow with Ultrasound - Continuity Equation on Multiplane Dual-angle Doppler Imaging

Yaegashi, S., Maeda, M. & Nagaoka, R., 2018/10/26, 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2018. Institute of Electrical and Electronics Engineers Inc., p. 3173-3176 4 p. 8512950. (Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS; vol. 2018-July).

研究成果: 書籍の章/レポート/会議録 › 会議への寄与 › 査読

Improvement of high-range-resolution imaging by considering change in ultrasonic waveform during propagation

Mozumi, M., Nagaoka, R. & Hasegawa, H., 2018/07, In: Japanese Journal of Applied Physics. 57, 7, 07LF23.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

10 被引用数 (Scopus)

Investigation on dependence of initial value of statistical factor in estimation of temperature distribution inside biological tissue

Takeuchi, M., Matsui, Y., Sakai, T., Nagaoka, R. & Hideyuki Hasegawa, A., 2018.

研究成果: 会議への寄与 › 学会発表

Multi-frequency 3D phase tracking method with phased-array beamforming in Cartesian coordinate system

Nunome, S., Nagaoka, R. & Hideyuki Hasegawa, A., 2018.

研究成果: 会議への寄与 › 学会発表

Multi-frequency phase tracking method for estimation of three-dimensional motion velocity

Nunome, S., Nagaoka, R. & Hideyuki Hasegawa, A., 2018.

研究成果: 会議への寄与 › 学会発表

Noninvasive assessment of vascular elastography using 2D phase-sensitive motion estimator

Miyajo, A., Nagaoka, R. & Hideyuki Hasegawa, A., 2018.

研究成果: 会議への寄与 › 学会発表

Non local means denoising in photoacoustic imaging

Siregar, S., Nagaoka, R., Ul Haq, I. & Saijo, Y., 2018/07, In: Japanese Journal of Applied Physics. 57, 7, 07LB06.

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)

Optical Resolution Photoacoustic Microscopy with Fast Laser Scanning and Fixed Photoacoustic Detector^∗

Ishikawa, K., Shintate, R., Nagaoka, R. & Saijo, Y., 2018/10/26, 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2018. Institute of Electrical and Electronics Engineers Inc., p. 4800-4803 4 p. 8513104. (Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS; vol. 2018-July).

研究成果: 書籍の章/レポート/会議録 › 会議への寄与 › 査読

3 被引用数 (Scopus)

Plane-Wave Phase Coherence Imaging with Singular Value Decomposition

Hasegawa, H. & Nagaoka, R., 2018/12/17, 2018 IEEE International Ultrasonics Symposium, IUS 2018. IEEE Computer Society, 8579969. (IEEE International Ultrasonics Symposium, IUS; vol. 2018-October).

研究成果: 書籍の章/レポート/会議録 › 会議への寄与 › 査読

1 被引用数 (Scopus)

Quantitative evaluation on estimation of shear wave propagation speed using phase of particle velocity

Minagawa, M., Nagaoka, R., Hasegawa, H. & Yamaguchi and Shin-ichi Yagi, T., 2018.

研究成果: 会議への寄与 › 学会発表

長岡 亮

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長岡亮