Masaki Kokubo

6.7k total citations · 4 hit papers
168 papers, 5.0k citations indexed

About

Masaki Kokubo is a scholar working on Pulmonary and Respiratory Medicine, Radiation and Radiology, Nuclear Medicine and Imaging. According to data from OpenAlex, Masaki Kokubo has authored 168 papers receiving a total of 5.0k indexed citations (citations by other indexed papers that have themselves been cited), including 98 papers in Pulmonary and Respiratory Medicine, 88 papers in Radiation and 52 papers in Radiology, Nuclear Medicine and Imaging. Recurrent topics in Masaki Kokubo's work include Advanced Radiotherapy Techniques (87 papers), Lung Cancer Diagnosis and Treatment (58 papers) and Medical Imaging Techniques and Applications (31 papers). Masaki Kokubo is often cited by papers focused on Advanced Radiotherapy Techniques (87 papers), Lung Cancer Diagnosis and Treatment (58 papers) and Medical Imaging Techniques and Applications (31 papers). Masaki Kokubo collaborates with scholars based in Japan, Germany and United States. Masaki Kokubo's co-authors include Masahiro Hiraoka, Yasushi Nagata, Takashi Mizowaki, Hiroshi Onishi, Katsuyuki Karasawa, Kazushige Hayakawa, Masato Hareyama, Yoshihiro Takai, Tomoki Kimura and Hiroki Shirato and has published in prestigious journals such as Journal of Clinical Oncology, Cancer and Scientific Reports.

In The Last Decade

Masaki Kokubo

154 papers receiving 4.9k 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, Yasushi Nagata et al. profile →
Stereotactic hypofractionated high‐dose irradiation for stage I nonsmall cell lung carcinoma

2004 681 citations Hiroshi Onishi, Yasushi Nagata et al. 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, Yasushi Nagata et al. International Journal of Radiation Oncology*Biology*Physics profile →
Prospective Trial of Stereotactic Body Radiation Therapy for Both Operable and Inoperable T1N0M0 Non-Small Cell Lung Cancer: Japan Clinical Oncology Group Study JCOG0403

2015 291 citations Yasushi Nagata, Masahiro Hiraoka 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
Masaki Kokubo Japan	31	3.7k	3.1k	2.2k	760	515	168	5.0k
Takashi Mizowaki Japan	39	4.1k 1.1×	3.9k 1.3×	3.1k 1.4×	652 0.9×	760 1.5×	423	6.2k
Rikiya Onimaru Japan	38	2.8k 0.8×	2.8k 0.9×	2.0k 0.9×	459 0.6×	638 1.2×	137	4.4k
Katsuyuki Karasawa Japan	26	2.8k 0.8×	1.8k 0.6×	1.2k 0.6×	744 1.0×	671 1.3×	144	4.0k
Stefano Tomatis Italy	35	2.0k 0.5×	1.8k 0.6×	1.5k 0.7×	1.1k 1.4×	604 1.2×	199	4.0k
Tomoki Kimura Japan	24	2.6k 0.7×	1.9k 0.6×	1.4k 0.6×	554 0.7×	579 1.1×	128	3.7k
Atsuya Takeda Japan	38	3.7k 1.0×	2.7k 0.9×	2.0k 0.9×	905 1.2×	807 1.6×	140	5.6k
Mary K. Martel United States	43	4.7k 1.3×	4.5k 1.5×	3.8k 1.7×	651 0.9×	1.0k 2.0×	91	7.3k
Inga S. Grills United States	43	3.3k 0.9×	2.8k 0.9×	2.0k 0.9×	751 1.0×	888 1.7×	169	6.0k
Wilko F.A.R. Verbakel Netherlands	37	3.1k 0.8×	3.7k 1.2×	2.4k 1.1×	241 0.3×	480 0.9×	139	4.6k
Chandra Burman United States	33	5.2k 1.4×	5.8k 1.9×	3.5k 1.6×	318 0.4×	685 1.3×	86	7.0k

Countries citing papers authored by Masaki Kokubo

Since Specialization

Citations

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

Fields of papers citing papers by Masaki Kokubo

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Masaki Kokubo

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

Kokubo, Masaki, et al.. (2025). Proposal for deep learning of skin translucency subjective assessment by beauty advisors. 13–13.

Imano, Nobuki, S. Takahashi, Masaki Nakamura, et al.. (2025). National survey on definitive radiotherapy practices for locally advanced non-small cell lung cancer in Japan: JROSG 23–3. Journal of Radiation Research. 66(6). 689–698.

Kokubo, Masaki, et al.. (2025). Gelatin Cotton Candy: A model study to create functional fiber foods. International Journal of Gastronomy and Food Science. 40. 101168–101168.

Sanuki, Naoko, Tomoki Kimura, Atsuya Takeda, et al.. (2024). Final Results of a Multicenter Prospective Study of Stereotactic Body Radiation Therapy for Previously Untreated Solitary Primary Hepatocellular Carcinoma (The STRSPH Study). International Journal of Radiation Oncology*Biology*Physics. 121(4). 942–950.

Nakamura, Mitsuhiro, Yukinori Matsuo, Katsuyuki Karasawa, et al.. (2024). Prospective external validation of radiomics‐based predictive model of distant metastasis after dynamic tumor tracking stereotactic body radiation therapy in patients with non‐small‐cell lung cancer: A multi‐institutional analysis. Journal of Applied Clinical Medical Physics. 25(10). e14475–e14475. 1 indexed citations

Mitsuyoshi, Takamasa, Yuka Ono, Takahiro Kishi, et al.. (2024). Acute adverse events of ultra-hypofractionated whole-breast irradiation after breast-conserving surgery for early breast cancer in Japan: an interim analysis of the multi-institutional phase II UPBEAT study. Breast Cancer. 31(4). 643–648. 2 indexed citations

Iizuka, Yusuke, Masahiro Hiraoka, Masaki Kokubo, et al.. (2023). Dynamic tumor-tracking stereotactic body radiotherapy with real-time monitoring of liver tumors using a gimbal-mounted linac: A multi-institutional phase II study. Clinical and Translational Radiation Oncology. 39. 100591–100591. 5 indexed citations

Nakamura, Mitsuhiro, Takamasa Mitsuyoshi, Takashi Shintani, et al.. (2020). Application and limitation of radiomics approach to prognostic prediction for lung stereotactic body radiotherapy using breath‐hold CT images with random survival forest: A multi‐institutional study. Medical Physics. 47(9). 4634–4643. 31 indexed citations

Fujimoto, Daichi, Keiichiro Uehara, Yuki Sato, et al.. (2017). Alteration of PD-L1 expression and its prognostic impact after concurrent chemoradiation therapy in non-small cell lung cancer patients. Scientific Reports. 7(1). 11373–11373. 68 indexed citations

10.

Nakamura, Mitsuhiro, N. Ueki, Masahiro Yamada, et al.. (2016). Multivariate analysis for the estimation of target localization errors in fiducial marker‐based radiotherapy. Medical Physics. 43(4). 1907–1912. 14 indexed citations

11.

Nakamura, Mitsuhiro, Nobutaka Mukumoto, Masahiro Yamada, et al.. (2015). Influence of the correlation modeling period on the prediction accuracy of infrared marker-based dynamic tumor tracking using a gimbaled X-ray head. Physica Medica. 31(3). 204–209. 9 indexed citations

12.

Mukumoto, Nobutaka, Mitsuhiro Nakamura, Akira Sawada, et al.. (2012). Intrafractional Tracking Accuracy in Surrogate Signal-based Dynamic Tumor Tracking Irradiation With 4DRT. International Journal of Radiation Oncology*Biology*Physics. 84(3). S852–S852. 1 indexed citations

13.

Nakamura, Mitsuhiro, Akira Sawada, Kenji Takayama, et al.. (2010). Dosimetric characterization of a multileaf collimator for a new four‐dimensional image‐guided radiotherapy system with a gimbaled x‐ray head, MHI‐TM2000a). Medical Physics. 37(9). 4684–4691. 42 indexed citations

14.

Nagata, Y., Masahiro Hiraoka, Taro Shibata, et al.. (2010). A Phase II Trial of Stereotactic Body Radiation Therapy for Operable T1N0M0 Non-small Cell Lung Cancer: Japan Clinical Oncology Group (JCOG0403). International Journal of Radiation Oncology*Biology*Physics. 78(3). S27–S28. 58 indexed citations

15.

Kokubo, Masaki, et al.. (2007). Development of an ultrasmall ‐band linear accelerator guide for a four‐dimensional image‐guided radiotherapy system with a gimbaled x‐ray head. Medical Physics. 34(5). 1797–1808. 44 indexed citations

16.

Yamauchi, Chikako, Michihide Mitsumori, Yasushi Nagata, et al.. (2005). Bilateral breast-conserving therapy for bilateral breast cancer: Results and consideration of radiation technique. Breast Cancer. 12(2). 135–139. 22 indexed citations

17.

Aoki, Tetsuya, Yasushi Nagata, Yoshiharu Negoro, et al.. (2004). Evaluation of Lung Injury after Three-dimensional Conformal Stereotactic Radiation Therapy for Solitary Lung Tumors: CT Appearance. Radiology. 230(1). 101–108. 96 indexed citations

18.

Kokubo, Masaki, Michihide Mitsumori, Kazunori Kanehira, et al.. (2001). Results of Breast-Conserving Therapy for Ductal Carcinomain situ: The Kyoto University Experiences. Breast Cancer. 8(2). 153–157. 1 indexed citations

19.

Nagata, Yasushi, Yoshiharu Negoro, Tetsuya Aoki, et al.. (2001). [Three-dimensional conformal radiotherapy for extracranial tumors using a stereotactic body frame]. PubMed. 21(1). 28–34. 7 indexed citations

20.

Kokubo, Masaki, Yuta Shibamoto, Tetsuya Aoki, et al.. (2000). Long-term Results of Radiation Therapy for Pituitary Adenoma. Journal of Neuro-Oncology. 47(1). 79–84. 22 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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