Kei Kitamura

5.0k total citations · 2 hit papers
29 papers, 3.9k citations indexed

About

Kei Kitamura is a scholar working on Pulmonary and Respiratory Medicine, Radiation and Radiology, Nuclear Medicine and Imaging. According to data from OpenAlex, Kei Kitamura has authored 29 papers receiving a total of 3.9k indexed citations (citations by other indexed papers that have themselves been cited), including 23 papers in Pulmonary and Respiratory Medicine, 18 papers in Radiation and 11 papers in Radiology, Nuclear Medicine and Imaging. Recurrent topics in Kei Kitamura's work include Advanced Radiotherapy Techniques (18 papers), Radiation Therapy and Dosimetry (14 papers) and Medical Imaging Techniques and Applications (9 papers). Kei Kitamura is often cited by papers focused on Advanced Radiotherapy Techniques (18 papers), Radiation Therapy and Dosimetry (14 papers) and Medical Imaging Techniques and Applications (9 papers). Kei Kitamura collaborates with scholars based in Japan, Netherlands and United States. Kei Kitamura's co-authors include Hiroki Shirato, Shinichi Shimizu, Kazuo Miyasaka, Yvette Seppenwoolde, Marcel van Herk, Joos V. Lebesque, Nobuo Shinohara, Rikiya Onimaru, Takeshi Nishioka and Katsuhisa Fujita and has published in prestigious journals such as SHILAP Revista de lepidopterología, Cancer and International Journal of Radiation Oncology*Biology*Physics.

In The Last Decade

Kei Kitamura

25 papers receiving 3.8k citations

Hit Papers

Precise and real-time measurement of 3D tumor motion in l... 2000 2026 2008 2017 2002 2000 250 500 750 1000
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.

  1. Precise and real-time measurement of 3D tumor motion in lung due to breathing and heartbeat, measured during radiotherapy
    2002 1.1k citations Yvette Seppenwoolde, Hiroki Shirato et al. International Journal of Radiation Oncology*Biology*Physics profile →
  2. Physical aspects of a real-time tumor-tracking system for gated radiotherapy
    2000 520 citations Hiroki Shirato, Shinichi Shimizu 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 Career Trend Papers Cites
Kei Kitamura Japan 18 3.6k 2.8k 2.7k 686 197 29 3.9k
Bhudatt R. Paliwal United States 24 2.5k 0.7× 1.9k 0.7× 1.6k 0.6× 587 0.9× 176 0.9× 90 3.0k
William B. Harms United States 23 4.2k 1.2× 2.9k 1.0× 3.4k 1.3× 828 1.2× 277 1.4× 51 4.9k
Minsong Cao United States 32 2.0k 0.5× 2.0k 0.7× 1.7k 0.6× 374 0.5× 204 1.0× 179 3.2k
Paul Reckwerdt United States 23 3.0k 0.8× 2.3k 0.8× 2.0k 0.7× 731 1.1× 188 1.0× 41 3.2k
K Langen United States 36 4.9k 1.4× 3.5k 1.3× 3.2k 1.2× 1.4k 2.0× 210 1.1× 124 5.4k
Twyla R. Willoughby United States 31 3.9k 1.1× 2.5k 0.9× 3.0k 1.1× 1.0k 1.5× 217 1.1× 98 4.3k
Anne Richter Germany 24 1.9k 0.5× 1.5k 0.5× 1.4k 0.5× 413 0.6× 216 1.1× 61 2.2k
N. Reynaert Belgium 25 1.5k 0.4× 1.3k 0.5× 1.1k 0.4× 421 0.6× 115 0.6× 96 1.9k
J.P. Cuijpers Netherlands 25 2.4k 0.7× 1.7k 0.6× 2.0k 0.8× 289 0.4× 208 1.1× 48 2.8k
Isaac I. Rosen United States 29 2.2k 0.6× 1.4k 0.5× 1.9k 0.7× 389 0.6× 179 0.9× 73 2.7k

Countries citing papers authored by Kei Kitamura

Since Specialization
Citations

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

Fields of papers citing papers by Kei Kitamura

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Kei Kitamura

This figure shows the co-authorship network connecting the top 25 collaborators of Kei Kitamura. A scholar is included among the top collaborators of Kei Kitamura 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 Kei Kitamura. Kei Kitamura 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.
Masui, Toshihiko, Jun Muto, Kei Kitamura, et al.. (2024). Is distal pancreatectomy the optimal surgical procedure for pancreatic neck cancer?. Surgery. 178. 108930–108930.
2.
Kitamura, Kei, Toshiro Ogura, Ryoichi Miyamoto, et al.. (2023). Splenic sarcoid reaction mimicking metastases in patients after uterine cancer surgery: a report of two cases. SHILAP Revista de lepidopterología. 9(1). 167–167.
3.
Kitamura, Kei, Minoru Esaki, Shunsuke Sugawara, et al.. (2022). Prognostic Impact of Radiological Splenic Artery Involvement in Pancreatic Ductal Adenocarcinoma of the Body and Tail. Annals of Surgical Oncology. 29(11). 7047–7058. 6 indexed citations
4.
Kitamura, Kei, Dai Shida, Shigeki Sekine, et al.. (2021). Comparison of model fit and discriminatory ability of the 8th edition of the tumor-node-metastasis classification and the 9th edition of the Japanese classification to identify stage III colorectal cancer. International Journal of Clinical Oncology. 26(9). 1671–1678. 5 indexed citations
5.
Taguchi, Hiroshi, Yusuke Sakuhara, Shuhei Hige, et al.. (2007). Intercepting Radiotherapy Using a Real-Time Tumor-Tracking Radiotherapy System for Highly Selected Patients With Hepatocellular Carcinoma Unresectable With other Modalities. International Journal of Radiation Oncology*Biology*Physics. 69(2). 376–380. 14 indexed citations
6.
Shirato, Hiroki, Shinichi Shimizu, Kei Kitamura, & Rikiya Onimaru. (2007). Organ motion in image-guided radiotherapy: lessons from real-time tumor-tracking radiotherapy. International Journal of Clinical Oncology. 12(1). 8–16. 51 indexed citations
7.
Shirato, Hiroki, et al.. (2004). Intrafractional tumor motion: lung and liver. Seminars in Radiation Oncology. 14(1). 10–18. 296 indexed citations
8.
Starkschall, George, et al.. (2004). Correlation of gross tumor volume excursion with potential benefits of respiratory gating. International Journal of Radiation Oncology*Biology*Physics. 60(4). 1291–1297. 55 indexed citations
9.
Court, Laurence E., Lei Dong, Matthew T. Ballo, et al.. (2004). Evaluation of a contour-alignment technique for CT-guided prostate radiotherapy: an intra- and interobserver study. International Journal of Radiation Oncology*Biology*Physics. 59(2). 412–418. 44 indexed citations
10.
Kitamura, Kei, Hiroki Shirato, Yvette Seppenwoolde, et al.. (2003). Tumor location, cirrhosis, and surgical history contribute to tumor movement in the liver, as measured during stereotactic irradiation using a real-time tumor-tracking radiotherapy system. International Journal of Radiation Oncology*Biology*Physics. 56(1). 221–228. 106 indexed citations
11.
Shirato, Hiroki, Toshiyuki Harada, Kazutoshi Hida, et al.. (2003). Feasibility of insertion/implantation of 2.0-mm-diameter gold internal fiducial markers for precise setup and real-time tumor tracking in radiotherapy. International Journal of Radiation Oncology*Biology*Physics. 56(1). 240–247. 274 indexed citations
12.
Onimaru, Rikiya, Hiroki Shirato, Shinichi Shimizu, et al.. (2003). Tolerance of organs at risk in small-volume, hypofractionated, image-guided radiotherapy for primary and metastatic lung cancers. International Journal of Radiation Oncology*Biology*Physics. 56(1). 126–135. 205 indexed citations
13.
Seppenwoolde, Yvette, Hiroki Shirato, Kei Kitamura, et al.. (2002). Precise and real-time measurement of 3D tumor motion in lung due to breathing and heartbeat, measured during radiotherapy. International Journal of Radiation Oncology*Biology*Physics. 53(4). 822–834. 1106 indexed citations breakdown →
14.
15.
Kitamura, Kei, Hiroki Shirato, Yvette Seppenwoolde, et al.. (2002). Three-dimensional intrafractional movement of prostate measured during real-time tumor-tracking radiotherapy in supine and prone treatment positions. International Journal of Radiation Oncology*Biology*Physics. 53(5). 1117–1123. 161 indexed citations
16.
Shimizu, Shinichi, Hiroki Shirato, Shigeaki Ogura, et al.. (2001). Detection of lung tumor movement in real-time tumor-tracking radiotherapy. International Journal of Radiation Oncology*Biology*Physics. 51(2). 304–310. 206 indexed citations
17.
Shirato, Hiroki, Shinichi Shimizu, Kei Kitamura, et al.. (2000). Four-dimensional treatment planning and fluoroscopic real-time tumor tracking radiotherapy for moving tumor. International Journal of Radiation Oncology*Biology*Physics. 48(2). 435–442. 359 indexed citations
18.
Shirato, Hiroki, Shinichi Shimizu, Tatsuya Kunieda, et al.. (2000). Physical aspects of a real-time tumor-tracking system for gated radiotherapy. International Journal of Radiation Oncology*Biology*Physics. 48(4). 1187–1195. 520 indexed citations breakdown →
19.
Shimizu, Shinichi, Hiroki Shirato, Kei Kitamura, et al.. (2000). Use of an implanted marker and real-time tracking of the marker for the positioning of prostate and bladder cancers. International Journal of Radiation Oncology*Biology*Physics. 48(5). 1591–1597. 174 indexed citations
20.
Kitamura, Kei, Hiroki Shirato, Yutaka Sawamura, et al.. (1999). Preirradiation evaluation and technical assessment of involved-field radiotherapy using computed tomographic (CT) simulation and neoadjuvant chemotherapy for intracranial germinoma. International Journal of Radiation Oncology*Biology*Physics. 43(4). 783–788. 20 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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