S. Otsuka

532 total citations
24 papers, 355 citations indexed

About

S. Otsuka is a scholar working on Pulmonary and Respiratory Medicine, Radiation and Radiology, Nuclear Medicine and Imaging. According to data from OpenAlex, S. Otsuka has authored 24 papers receiving a total of 355 indexed citations (citations by other indexed papers that have themselves been cited), including 23 papers in Pulmonary and Respiratory Medicine, 14 papers in Radiation and 9 papers in Radiology, Nuclear Medicine and Imaging. Recurrent topics in S. Otsuka's work include Advanced Radiotherapy Techniques (14 papers), Radiation Therapy and Dosimetry (9 papers) and Effects of Radiation Exposure (7 papers). S. Otsuka is often cited by papers focused on Advanced Radiotherapy Techniques (14 papers), Radiation Therapy and Dosimetry (9 papers) and Effects of Radiation Exposure (7 papers). S. Otsuka collaborates with scholars based in Japan and Greece. S. Otsuka's co-authors include Hiromitsu Iwata, Yuta Shibamoto, A. Miyakawa, Hiroyuki Ogino, C. Sugie, Natsuo Tomita, Shinji Hato, Shinji Kuroda, Rumi Murata and Toshiyoshi Fujiwara and has published in prestigious journals such as Scientific Reports, International Journal of Radiation Oncology*Biology*Physics and Medical Physics.

In The Last Decade

S. Otsuka

20 papers receiving 350 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
S. Otsuka Japan	9	286	127	90	80	58	24	355
Kerstin Siebenlist Germany	11	181 0.6×	201 1.6×	64 0.7×	180 2.3×	50 0.9×	20	389
Angela Paul Germany	10	219 0.8×	50 0.4×	40 0.4×	54 0.7×	130 2.2×	15	289
Sameh Hashem Jordan	10	98 0.3×	70 0.6×	109 1.2×	59 0.7×	36 0.6×	16	273
Rocchina Caivano Italy	12	158 0.6×	103 0.8×	36 0.4×	144 1.8×	52 0.9×	30	301
Takero Hirata Japan	9	194 0.7×	162 1.3×	42 0.5×	118 1.5×	86 1.5×	34	305
Stefan Münch Germany	12	221 0.8×	81 0.6×	212 2.4×	79 1.0×	24 0.4×	40	368
Priyamvada Maitre India	9	316 1.1×	158 1.2×	76 0.8×	86 1.1×	54 0.9×	51	425
Emma D’Ippolito Italy	10	123 0.4×	48 0.4×	73 0.8×	197 2.5×	21 0.4×	23	341
Mathew J. Schipper United States	5	222 0.8×	112 0.9×	99 1.1×	94 1.2×	12 0.2×	9	428
Sheema Chawla United States	8	84 0.3×	76 0.6×	157 1.7×	49 0.6×	28 0.5×	15	282

Countries citing papers authored by S. Otsuka

Since Specialization

Citations

This map shows the geographic impact of S. Otsuka'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 S. Otsuka with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites S. Otsuka more than expected).

Fields of papers citing papers by S. Otsuka

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by S. Otsuka. 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 S. Otsuka. The network helps show where S. Otsuka may publish in the future.

Co-authorship network of co-authors of S. Otsuka

This figure shows the co-authorship network connecting the top 25 collaborators of S. Otsuka. A scholar is included among the top collaborators of S. Otsuka 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 S. Otsuka. S. Otsuka is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Tomita, Natsuo, Hiromichi Ishiyama, Hirotaka Kaneko, et al.. (2025). Clinical Outcomes and Prognostic Factors for Extramammary Paget’s Disease Treated with Radiation Therapy: A Multi-Institutional Observational Study. Cancers. 17(9). 1507–1507.

Tazawa, Hirofumi, Shigefumi Yoshino, S. Otsuka, et al.. (2025). TMPRSS4 as a prognostic biomarker after gastric cancer surgery in a multicenter retrospective study. Scientific Reports. 15(1). 8385–8385. 1 indexed citations

Otsuka, S., T. Toshito, C. Omachi, et al.. (2025). Postal dosimetry audit for scanning proton beam using radiophotoluminescence glass dosimeter: A multicenter pilot study. Medical Physics. 52(6). 4996–5004.

Tomita, Natsuo, Akira Torii, S. Ayakawa, et al.. (2024). Impact of radiation doses on clinical relapse of biochemically recurrent prostate cancer after prostatectomy. Scientific Reports. 14(1). 113–113.

Kuroda, Shinji, Yasuhiro Choda, S. Otsuka, et al.. (2023). Incidence of Metachronous Remnant Gastric Cancer after Proximal Gastrectomy with the Double-flap Technique (rD-FLAP-rGC Study): A Multicenter, Retrospective Study. Annals of Surgical Oncology. 30(4). 2307–2316. 8 indexed citations

Kakiuchi, Yoshihiko, Shinji Kuroda, Yasuhiro Choda, et al.. (2023). Prognostic nutritional index is a prognostic factor for patients with gastric cancer and esophagogastric junction cancer undergoing proximal gastrectomy with esophagogastrostomy by the double-flap technique: A secondary analysis of the rD-FLAP study. Surgical Oncology. 50. 101990–101990. 3 indexed citations

Tomita, Natsuo, C. Sugie, S. Ayakawa, et al.. (2020). Impact of advanced radiotherapy techniques and dose intensification on toxicity of salvage radiotherapy after radical prostatectomy. Scientific Reports. 10(1). 114–114. 6 indexed citations

Murai, Taro, Masayuki Matsuo, Hidekazu Tanaka, et al.. (2019). Efficacy of herbal medicine TJ-14 for acute radiation-induced enteritis: a multi-institutional prospective Phase II trial. Journal of Radiation Research. 61(1). 140–145. 11 indexed citations

Kuroda, Shinji, Yasuhiro Choda, S. Otsuka, et al.. (2018). Multicenter retrospective study to evaluate the efficacy and safety of the double‐flap technique as antireflux esophagogastrostomy after proximal gastrectomy (rD‐FLAP Study). Annals of Gastroenterological Surgery. 3(1). 96–103. 70 indexed citations

10.

Shibamoto, Yuta, A. Miyakawa, S. Otsuka, & Hiromitsu Iwata. (2016). Radiobiology of hypofractionated stereotactic radiotherapy: what are the optimal fractionation schedules?. Journal of Radiation Research. 57(S1). i76–i82. 62 indexed citations

11.

Miyakawa, A., et al.. (2016). Fractionated stereotactic radiotherapy for metastatic brain tumors that recurred after gamma knife radiosurgery results in acceptable toxicity and favorable local control. International Journal of Clinical Oncology. 22(2). 250–256. 7 indexed citations

12.

Hayashi, Akihiro, Yuta Shibamoto, Yukiko Hattori, et al.. (2015). Dose–volume histogram comparison between static 5-field IMRT with 18-MV X-rays and helical tomotherapy with 6-MV X-rays. Journal of Radiation Research. 56(2). 338–345. 3 indexed citations

13.

Iwata, Hiromitsu, Satoshi Ishikura, F. Baba, et al.. (2014). Changes in volume of stage I non-small-cell lung cancer during stereotactic body radiotherapy. Radiation Oncology. 9(1). 8–8. 13 indexed citations

14.

Miyakawa, A., et al.. (2013). Applicability of the linear-quadratic model to single and fractionated radiotherapy schedules: an experimental study. Journal of Radiation Research. 55(3). 451–454. 17 indexed citations

15.

Murai, Taro, Yuta Shibamoto, Takeshi Nishiyama, et al.. (2012). Organizing pneumonia after stereotactic ablative radiotherapy of the lung. Radiation Oncology. 7(1). 123–123. 22 indexed citations

16.

Iwata, Hiromitsu, et al.. (2012). Compatibility of the repairable-conditionally repairable, multi-target and linear-quadratic models in converting hypofractionated radiation doses to single doses. Journal of Radiation Research. 54(2). 367–373. 27 indexed citations

17.

Iwata, Hiromitsu, et al.. (2012). Compatibility of the Conditionally-repairable, Multitarget, and Linear-Quadratic Models in Converting Hypofractionated Radiation Doses to Single Doses. International Journal of Radiation Oncology*Biology*Physics. 84(3). S685–S686. 1 indexed citations

18.

Otsuka, S., Yuta Shibamoto, Hiromitsu Iwata, et al.. (2011). Compatibility of the Linear-Quadratic Formalism and Biologically Effective Dose Concept to High-Dose-Per-Fraction Irradiation in a Murine Tumor. International Journal of Radiation Oncology*Biology*Physics. 81(5). 1538–1543. 34 indexed citations

19.

Shibamoto, Yuta, S. Otsuka, Hiromitsu Iwata, et al.. (2011). Radiobiological Evaluation of the Radiation Dose as Used in High-precision Radiotherapy: Effect of Prolonged Delivery Time and Applicability of the Linear-quadratic Model. Journal of Radiation Research. 53(1). 1–9. 65 indexed citations

20.

Murai, Taro, Yuta Shibamoto, F. Baba, et al.. (2010). Cryptogenic Organizing Pneumonia after Stereotactic Body Radiotherapy of the Lung. International Journal of Radiation Oncology*Biology*Physics. 78(3). S530–S531. 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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