Ryo Nagaoka

752 total citations
82 papers, 559 citations indexed

About

Ryo Nagaoka is a scholar working on Radiology, Nuclear Medicine and Imaging, Biomedical Engineering and Mechanics of Materials. According to data from OpenAlex, Ryo Nagaoka has authored 82 papers receiving a total of 559 indexed citations (citations by other indexed papers that have themselves been cited), including 64 papers in Radiology, Nuclear Medicine and Imaging, 55 papers in Biomedical Engineering and 34 papers in Mechanics of Materials. Recurrent topics in Ryo Nagaoka's work include Ultrasound Imaging and Elastography (62 papers), Photoacoustic and Ultrasonic Imaging (37 papers) and Ultrasonics and Acoustic Wave Propagation (31 papers). Ryo Nagaoka is often cited by papers focused on Ultrasound Imaging and Elastography (62 papers), Photoacoustic and Ultrasonic Imaging (37 papers) and Ultrasonics and Acoustic Wave Propagation (31 papers). Ryo Nagaoka collaborates with scholars based in Japan, Sweden and Denmark. Ryo Nagaoka's co-authors include Hideyuki Hasegawa, Masaaki Omura, Yoshifumi Saijo, Kazuto Kobayashi, Shin Yoshizawa, Kozue Saito, Mototaka Arakawa, Magnus Cinthio, Shin-ichiro Umemura and Gábor Andócs and has published in prestigious journals such as PLoS ONE, Scientific Reports and Sensors.

In The Last Decade

Ryo Nagaoka

72 papers receiving 549 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Ryo Nagaoka Japan 13 396 335 231 89 86 82 559
Ling Tong Belgium 15 544 1.4× 430 1.3× 231 1.0× 154 1.7× 145 1.7× 41 767
Luca Bassi Italy 10 612 1.5× 403 1.2× 372 1.6× 137 1.5× 110 1.3× 33 779
Yanning Zhu United States 9 599 1.5× 496 1.5× 251 1.1× 40 0.4× 64 0.7× 18 660
Ingvild Kinn Ekroll Norway 12 519 1.3× 400 1.2× 206 0.9× 185 2.1× 41 0.5× 37 612
Dongwoon Hyun United States 17 705 1.8× 651 1.9× 366 1.6× 23 0.3× 22 0.3× 63 866
Johannes G. Bosch Netherlands 9 222 0.6× 268 0.8× 50 0.2× 59 0.7× 32 0.4× 38 409
Che-Chou Shen Taiwan 14 430 1.1× 461 1.4× 219 0.9× 14 0.2× 28 0.3× 73 635
U‐Wai Lok United States 12 381 1.0× 374 1.1× 88 0.4× 19 0.2× 30 0.3× 36 504
R.E. Davidsen United States 7 265 0.7× 235 0.7× 135 0.6× 34 0.4× 69 0.8× 12 389
Theodore L. Rhyne United States 14 314 0.8× 290 0.9× 153 0.7× 207 2.3× 72 0.8× 30 548

Countries citing papers authored by Ryo Nagaoka

Since Specialization
Citations

This map shows the geographic impact of Ryo Nagaoka's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ryo Nagaoka with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ryo Nagaoka more than expected).

Fields of papers citing papers by Ryo Nagaoka

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ryo Nagaoka. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ryo Nagaoka. The network helps show where Ryo Nagaoka may publish in the future.

Co-authorship network of co-authors of Ryo Nagaoka

This figure shows the co-authorship network connecting the top 25 collaborators of Ryo Nagaoka. A scholar is included among the top collaborators of Ryo Nagaoka based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ryo Nagaoka. Ryo Nagaoka is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Omura, Masaaki, Kunimasa Yagi, Ryo Nagaoka, et al.. (2025). Dual-frequency excitation in high-frame-rate ultrasonic backscatter coefficient analysis of hemorheological properties. Ultrasonics. 149. 107589–107589.
2.
Sakai, Toshihiko, Yusuke Oshima, Yasuhiro Kojima, et al.. (2023). Nakagami parametric image for evaluation of the degree of thermal denaturation inside porcine liver induced ex vivo by radiofrequency ablation. Japanese Journal of Applied Physics. 62(SJ). SJ1018–SJ1018. 2 indexed citations
3.
Nagaoka, Ryo, Masaaki Omura, & Hideyuki Hasegawa. (2023). Investigation of a method to estimate the average speed of sound using phase variances of element signals for ultrasound compound imaging. Journal of Medical Ultrasonics. 51(1). 17–28.
4.
Omura, Masaaki, et al.. (2023). Investigation on synthetic aperture imaging using focused transmit beams for cardiac ultrasonography. Japanese Journal of Applied Physics. 62(SJ). SJ1048–SJ1048. 1 indexed citations
5.
Omura, Masaaki, Kunimasa Yagi, Ryo Nagaoka, & Hideyuki Hasegawa. (2023). Contrast analysis in ultrafast ultrasound blood flow imaging of jugular vein. Journal of Medical Ultrasonics. 50(2). 131–141. 5 indexed citations
6.
Omura, Masaaki, et al.. (2022). Investigation on improving performance of adaptive beamformer by statistical analysis of ultrasonic echoes. Japanese Journal of Applied Physics. 61(SG). SG1040–SG1040. 5 indexed citations
7.
Omura, Masaaki, Ryo Nagaoka, Kunimasa Yagi, et al.. (2022). Characterization of blood mimicking fluid with ultrafast ultrasonic and optical image velocimeters. Japanese Journal of Applied Physics. 61(SG). SG1067–SG1067. 9 indexed citations
8.
Nagaoka, Ryo, Shin Yoshizawa, Shin‐ichiro Umemura, & Hideyuki Hasegawa. (2021). Effects from correction of speed of sound in transmit and receive beamforming using focus beam. Japanese Journal of Applied Physics. 60(SD). SDDE19–SDDE19. 5 indexed citations
9.
Omura, Masaaki, et al.. (2021). Evaluation of accuracy of phase-sensitive method in estimation of axial motion and deformation with fluid-structure interaction analysis. Japanese Journal of Applied Physics. 60(SD). SDDE01–SDDE01. 3 indexed citations
10.
Wang, Hongpeng, et al.. (2021). Preliminary investigation on clutter filtering based on deep learning. Japanese Journal of Applied Physics. 60(SD). SDDE21–SDDE21. 2 indexed citations
11.
Omura, Masaaki, et al.. (2021). Impact of spacing of ultrasound receiving beams on estimation of 2D motion velocity. Japanese Journal of Applied Physics. 60(SD). SDDE07–SDDE07. 6 indexed citations
12.
Hasegawa, Hideyuki, et al.. (2021). Improvement of spatial resolution of medical ultrasound images by constrained least-square method. Japanese Journal of Applied Physics. 60(SD). SDDE16–SDDE16. 2 indexed citations
13.
Nagaoka, Ryo, et al.. (2021). Study on estimation of surface roughness by separation of reflection and backscattering components using ultrasonic synthetic aperture imaging. Japanese Journal of Applied Physics. 60(SD). SDDE09–SDDE09. 5 indexed citations
14.
Kawashima, Tomohiro, Yoshinobu Murakami, Naohiro Hozumi, et al.. (2021). Three-dimensional acoustic impedance mapping of human skin by improved time–frequency domain analysis. Japanese Journal of Applied Physics. 60(SD). SDDE22–SDDE22. 5 indexed citations
15.
Nagaoka, Ryo, Naoki Kawano, Daisuke Nakauchi, et al.. (2021). Photoluminescence and scintillation characteristics of (C 6 H 5 C n H 2 n NH 3 ) 2 PbBr 4 ( n  = 2, 3, 4). Japanese Journal of Applied Physics. 61(SB). SB1037–SB1037. 10 indexed citations
16.
17.
Nagaoka, Ryo, et al.. (2019). Investigation of the estimation accuracy of two-step block matching methods using envelope and RF signals for two-dimensional blood flow vector imaging. Japanese Journal of Applied Physics. 58(SG). SGGE10–SGGE10. 18 indexed citations
18.
Hasegawa, Hideyuki & Ryo Nagaoka. (2019). Basic study on synthetic aperture method using two kinds of transmit beams. IEICE Technical Report; IEICE Tech. Rep.. 119(87). 21–24. 1 indexed citations
19.
Arakawa, Mototaka, Shohei Mori, Hiroshi Kanai, et al.. (2018). Robust analysis method for acoustic properties of biological specimens measured by acoustic microscopy. Japanese Journal of Applied Physics. 57(7S1). 07LB07–07LB07. 3 indexed citations
20.
Hasegawa, Hideyuki & Ryo Nagaoka. (2018). Investigation on improvement of performance of ultrasonic beamformer. IEICE Technical Report; IEICE Tech. Rep.. 118(277). 1–4. 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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