Ryusuke Hara

4.1k total citations · 3 hit papers
42 papers, 2.9k citations indexed

About

Ryusuke Hara is a scholar working on Pulmonary and Respiratory Medicine, Radiation and Radiology, Nuclear Medicine and Imaging. According to data from OpenAlex, Ryusuke Hara has authored 42 papers receiving a total of 2.9k indexed citations (citations by other indexed papers that have themselves been cited), including 30 papers in Pulmonary and Respiratory Medicine, 21 papers in Radiation and 13 papers in Radiology, Nuclear Medicine and Imaging. Recurrent topics in Ryusuke Hara's work include Advanced Radiotherapy Techniques (21 papers), Radiation Therapy and Dosimetry (12 papers) and Lung Cancer Diagnosis and Treatment (8 papers). Ryusuke Hara is often cited by papers focused on Advanced Radiotherapy Techniques (21 papers), Radiation Therapy and Dosimetry (12 papers) and Lung Cancer Diagnosis and Treatment (8 papers). Ryusuke Hara collaborates with scholars based in Japan, United States and Germany. Ryusuke Hara's co-authors include Jun Itami, Hiroki Shirato, Katsuyuki Karasawa, Atsuya Takeda, Masato Hareyama, Kazushige Hayakawa, Hiroshi Onishi, Masaki Kokubo, Tomoki Kimura and Atsushi Ouchi and has published in prestigious journals such as Cancer, Scientific Reports and CHEST Journal.

In The Last Decade

Ryusuke Hara

41 papers receiving 2.9k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Hypofractionated Stereotactic Radiotherapy (HypoFXSRT) for Stage I Non-small Cell Lung Cancer: Updated Results of 257 Patients in a Japanese Multi-institutional Study

2007 741 citations Hiroshi Onishi, Hiroki Shirato et al. profile →
Stereotactic hypofractionated high‐dose irradiation for stage I nonsmall cell lung carcinoma

2004 681 citations Hiroshi Onishi, Tsutomu Araki et al. Cancer profile →
Stereotactic Body Radiotherapy (SBRT) for Operable Stage I Non–Small-Cell Lung Cancer: Can SBRT Be Comparable to Surgery?

2010 462 citations Hiroshi Onishi, Hiroki Shirato et al. International Journal of Radiation Oncology*Biology*Physics profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Ryusuke Hara Japan	21	2.4k	1.8k	1.1k	385	273	42	2.9k
Cornelis J.A. Haasbeek Netherlands	35	3.6k 1.5×	2.3k 1.3×	1.8k 1.6×	593 1.5×	381 1.4×	84	4.2k
Florian Sterzing Germany	28	1.7k 0.7×	1.1k 0.6×	1.1k 1.0×	338 0.9×	494 1.8×	101	2.5k
Ramzi Abdulrahman United States	15	1.6k 0.7×	1.3k 0.7×	750 0.7×	274 0.7×	276 1.0×	39	2.1k
Kazunari Yamada Japan	16	1.7k 0.7×	1.1k 0.6×	656 0.6×	302 0.8×	345 1.3×	85	2.2k
N. Di Muzio Italy	31	2.3k 0.9×	1.5k 0.8×	1.2k 1.1×	432 1.1×	435 1.6×	140	3.2k
Katsuyuki Karasawa Japan	26	2.8k 1.2×	1.8k 1.0×	1.2k 1.1×	744 1.9×	671 2.5×	144	4.0k
Yuzuru Niibe Japan	25	2.6k 1.1×	1.5k 0.8×	1.0k 0.9×	743 1.9×	620 2.3×	77	3.4k
Katrien De Jaeger Netherlands	23	1.8k 0.8×	1.7k 0.9×	1.6k 1.5×	291 0.8×	182 0.7×	47	2.7k
Angela van Baardwijk Netherlands	35	2.2k 0.9×	1.2k 0.7×	2.2k 2.0×	667 1.7×	320 1.2×	82	3.5k
Jian Z. Wang United States	29	1.8k 0.7×	1.3k 0.7×	1.1k 1.0×	496 1.3×	459 1.7×	51	2.9k

Countries citing papers authored by Ryusuke Hara

Since Specialization

Citations

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

Fields of papers citing papers by Ryusuke Hara

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ryusuke Hara

This figure shows the co-authorship network connecting the top 25 collaborators of Ryusuke Hara. A scholar is included among the top collaborators of Ryusuke Hara 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 Ryusuke Hara. Ryusuke Hara 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

Shirai, M., et al.. (2025). Commissioning of Halcyon enhanced leaf model in the Eclipse treatment planning system: Focus on simple slit fields and VMAT dose calculation. Journal of Applied Clinical Medical Physics. 26(6). e70044–e70044. 1 indexed citations

Nakamura, Katsumasa, Keiji Nihei, Yoshihiro Saito, et al.. (2024). A Japanese multi-institutional phase II study of moderate hypofractionated intensity-modulated radiotherapy with image-guided technique for prostate cancer. International Journal of Clinical Oncology. 29(6). 847–852. 5 indexed citations

Sudo, Kentaro, et al.. (2017). Phase II study of induction gemcitabine and S-1 followed by chemoradiotherapy and systemic chemotherapy using S-1 for locally advanced pancreatic cancer. Cancer Chemotherapy and Pharmacology. 80(1). 195–202. 13 indexed citations

Iuchi, Toshihiko, Kazuo Hatano, Yoshio Uchino, et al.. (2015). Methionine Uptake and Required Radiation Dose to Control Glioblastoma. International Journal of Radiation Oncology*Biology*Physics. 93(1). 133–140. 21 indexed citations

Imada, Hiroshi, Hirotoshi Kato, Shigeo Yasuda, et al.. (2010). Compensatory enlargement of the liver after treatment of hepatocellular carcinoma with carbon ion radiotherapy – Relation to prognosis and liver function. Radiotherapy and Oncology. 96(2). 236–242. 23 indexed citations

Koga, Tomoyuki, Akio Morita, Keisuke Maruyama, et al.. (2009). Long-term control of disseminated pleomorphic xanthoastrocytoma with anaplastic features by means of stereotactic irradiation. Neuro-Oncology. 11(4). 446–451. 43 indexed citations

Mori, Shinichiro, Takeshi Yanagi, Ryusuke Hara, et al.. (2009). Comparison of Respiratory-Gated and Respiratory-Ungated Planning in Scattered Carbon Ion Beam Treatment of the Pancreas Using Four-Dimensional Computed Tomography. International Journal of Radiation Oncology*Biology*Physics. 76(1). 303–312. 26 indexed citations

Mori, Shinichiro, Ryusuke Hara, Hiroshi Asakura, et al.. (2009). Water-equivalent pathlength reproducibility due to respiratory pattern variation in charged-particle pancreatic radiotherapy. Radiological Physics and Technology. 2(1). 112–118. 3 indexed citations

Mori, Shinichiro, Ryusuke Hara, Takeshi Yanagi, et al.. (2009). Four-dimensional measurement of intrafractional respiratory motion of pancreatic tumors using a 256 multi-slice CT scanner. Radiotherapy and Oncology. 92(2). 231–237. 66 indexed citations

10.

Hara, Ryusuke, Shinichiro Mori, Takeshi Yanagi, et al.. (2009). Impact of Intrafractional Bowel Gas Movement on Carbon Ion Beam Dose Distribution in Pancreatic Radiotherapy. International Journal of Radiation Oncology*Biology*Physics. 73(4). 1276–1281. 58 indexed citations

11.

Onishi, Hiroshi, Tsutomu Araki, Hiroki Shirato, et al.. (2004). Stereotactic hypofractionated high‐dose irradiation for stage I nonsmall cell lung carcinoma. Cancer. 101(7). 1623–1631. 681 indexed citations breakdown →

12.

Hara, Ryusuke, et al.. (2004). Serum Levels of KL-6 for Predicting the Occurrence of Radiation Pneumonitis After Stereotactic Radiotherapy for Lung Tumors. CHEST Journal. 125(1). 340–344. 48 indexed citations

13.

Uno, Takashi, Minako Sumi, Teruki Teshima, et al.. (2003). Process of care and preliminary outcome in limited-stage small-cell lung cancer: results of the 1995–1997 patterns of care study in Japan. International Journal of Radiation Oncology*Biology*Physics. 55(3). 626–632. 12 indexed citations

14.

Itami, Jun, Ryusuke Hara, Hideomi Yamashita, et al.. (2003). Transperineal High-Dose-Rate Interstitial Radiation Therapy in the Management of Gynecologic Malignancies. Strahlentherapie und Onkologie. 179(11). 737–741. 22 indexed citations

15.

Yamamoto, Seiji, Hiroshi Takano, Ken Motoori, et al.. (2001). Detection of nasopharyngeal carcinoma: fast short time inversion recovery images compared with fat suppression, contrast enhancedT₁weighted spin echo images. British Journal of Radiology. 74(885). 805–810. 4 indexed citations

16.

Hara, Ryusuke, et al.. (2001). Risk factors for massive hemoptysis after endobronchial brachytherapy in patients with tracheobronchial malignancies. Cancer. 92(10). 2623–2627. 23 indexed citations

17.

Isobe, Kouichi, Masashi Ohta, Shigeo Yasuda, et al.. (2000). Postoperative Radiation Therapy for Pituitary Adenoma. Journal of Neuro-Oncology. 48(2). 135–140. 24 indexed citations

18.

Aruga, Takashi, Jun Itami, Kaori Nakajima, et al.. (2000). Treatment for pyothorax-associated lymphoma. Radiotherapy and Oncology. 56(1). 59–63. 15 indexed citations

19.

Aruga, Takashi, Jun Itami, Kaori Nakajima, et al.. (2000). Target volume definition for upper abdominal irradiation using CT scans obtained during inhale and exhale phases. International Journal of Radiation Oncology*Biology*Physics. 48(2). 465–469. 62 indexed citations

20.

Ito, Hisao, Atsushi Kubo, Koichi Isobe, et al.. (1997). Radiotherapy for Centrally Recurrent Cervical Cancer of the Vaginal Stump Following Hysterectomy. Gynecologic Oncology. 67(2). 154–161. 44 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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