Kai Obayashi

831 total citations
38 papers, 580 citations indexed

About

Kai Obayashi is a scholar working on Pulmonary and Respiratory Medicine, Surgery and Molecular Biology. According to data from OpenAlex, Kai Obayashi has authored 38 papers receiving a total of 580 indexed citations (citations by other indexed papers that have themselves been cited), including 24 papers in Pulmonary and Respiratory Medicine, 11 papers in Surgery and 6 papers in Molecular Biology. Recurrent topics in Kai Obayashi's work include Lung Cancer Diagnosis and Treatment (16 papers), Lung Cancer Treatments and Mutations (8 papers) and Pleural and Pulmonary Diseases (7 papers). Kai Obayashi is often cited by papers focused on Lung Cancer Diagnosis and Treatment (16 papers), Lung Cancer Treatments and Mutations (8 papers) and Pleural and Pulmonary Diseases (7 papers). Kai Obayashi collaborates with scholars based in Japan. Kai Obayashi's co-authors include Kimihiro Shimizu, Yoichi Ohtaki, Toshiteru Nagashima, Seshiru Nakazawa, Akira Mogi, Hiroyuki Kuwano, Izumi Takeyoshi, Mitsuhiro Kamiyoshihara, Toshiki Yajima and Hitoshi Igai and has published in prestigious journals such as Journal of Clinical Oncology, PLoS ONE and Scientific Reports.

In The Last Decade

Kai Obayashi

36 papers receiving 571 citations

Peers

Kai Obayashi

PRM

ONCOL

PHARM

SURGE

Yon‐Dschun Ko Germany

Amir Kaisary United Kingdom

Sandra González Maldonado Germany

Sei‐Hyun Ahn South Korea

T. Fujiwara Japan

PA Fasching Germany

Toshihiko Kurohiji Japan

Mark Wong Australia

Toshimichi Miya Japan

Yon‐Dschun Ko Germany

Kai Obayashi

151 ×0.4

PRM

277 ×2.3

ONCOL

116 ×1.2

PHARM

444 ×4.7

62 ×0.7

SURGE

Citations per year, relative to Kai Obayashi Kai Obayashi (= 1×) peers Yon‐Dschun Ko

Countries citing papers authored by Kai Obayashi

Since Specialization

Citations

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

Fields of papers citing papers by Kai Obayashi

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Kai Obayashi

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

Nakazawa, Seshiru, Kimihiro Shimizu, Kai Obayashi, et al.. (2023). Clinicopathological features and surgical outcomes of lobectomy combined with segmentectomy: a cohort study. Journal of Thoracic Disease. 15(3). 1075–1085. 1 indexed citations

Yajima, Toshiki, Kimihiro Shimizu, Toshiteru Nagashima, et al.. (2023). Risk factors for late-onset pulmonary fistula after pulmonary segmentectomy. Journal of Thoracic Disease. 15(3). 1009–1017. 3 indexed citations

Ohtaki, Yoichi, Toshiki Yajima, Toshiteru Nagashima, et al.. (2022). Complex vs. simple segmentectomy: comparing surgical outcomes in the left upper division. General Thoracic and Cardiovascular Surgery. 70(11). 962–970. 4 indexed citations

Nakazawa, Seshiru, Kimihiro Shimizu, Kai Obayashi, et al.. (2021). Surgical outcomes after multiple segmentectomy: a cohort study. Journal of Thoracic Disease. 14(1). 113–122. 3 indexed citations

Nakazawa, Seshiru, Toshiki Yajima, Kai Obayashi, et al.. (2021). Superior Lingular S4 Segmentectomy. The Annals of Thoracic Surgery. 113(2). e141–e144. 3 indexed citations

Obayashi, Kai, Toshiki Yajima, Kimihiro Shimizu, & Ken Shirabe. (2020). Thoracoscopic S4a subsegmentectomy combined with wedge resections for treatment of metastatic tumors located at the intersection of the major and minor fissures. JTCVS Techniques. 4. 309–311.

Yajima, Toshiki, Kimihiro Shimizu, Akira Mogi, et al.. (2019). Pulmonary Artery Compression Facilitates Intersegmental Border Visualization. The Annals of Thoracic Surgery. 108(2). e141–e143. 4 indexed citations

Shimizu, Kimihiro, Yusuke Goto, Reika Kawabata‐Iwakawa, et al.. (2019). Stathmin-1 Is a Useful Diagnostic Marker for High-Grade Lung Neuroendocrine Tumors. The Annals of Thoracic Surgery. 108(1). 235–243. 7 indexed citations

Yokobori, Takehiko, Akira Mogi, Kimihiro Shimizu, et al.. (2019). Genetic and Immunohistochemical Studies Investigating the Histogenesis of Neuroendocrine and Carcinomatous Components of Combined Neuroendocrine Carcinoma. Annals of Surgical Oncology. 26(6). 1744–1750. 5 indexed citations

10.

Yajima, Toshiki, Akira Mogi, Kimihiro Shimizu, et al.. (2018). Ectopic thymoma in the paratracheal region of the middle mediastinum: a rare case report and literature review. BMC Research Notes. 11(1). 256–256. 8 indexed citations

11.

Shimizu, Kimihiro, Yoichi Ohtaki, Seshiru Nakazawa, et al.. (2018). Minimally Invasive Open-Window Thoracostomy Using Wound Edge Protectors. The Annals of Thoracic Surgery. 107(5). e371–e373. 1 indexed citations

12.

Bao, Pinjie, Takehiko Yokobori, Bolag Altan, et al.. (2017). High STMN1 Expression is Associated with Cancer Progression and Chemo-Resistance in Lung Squamous Cell Carcinoma. Annals of Surgical Oncology. 24(13). 4017–4024. 37 indexed citations

13.

Nagashima, Toshiteru, Kimihiro Shimizu, Yoichi Ohtaki, et al.. (2017). Analysis of variation in bronchovascular pattern of the right middle and lower lobes of the lung using three-dimensional CT angiography and bronchography. General Thoracic and Cardiovascular Surgery. 65(6). 343–349. 52 indexed citations

14.

Usui, Kengo, Kimihiro Shimizu, Yasumasa Kimura, et al.. (2017). Highly sensitive detection of a HER2 12-base pair duplicated insertion mutation in lung cancer using the Eprobe-PCR method. PLoS ONE. 12(2). e0171225–e0171225. 7 indexed citations

15.

Shimizu, Kimihiro, Akira Mogi, Toshiki Yajima, et al.. (2017). Thoracoscopic Subsuperior Segment Segmentectomy. The Annals of Thoracic Surgery. 104(5). e407–e410. 13 indexed citations

16.

Ohtaki, Yoichi, Kimihiro Shimizu, Kyoichi Kaira, et al.. (2016). Risk factors associated with recurrence of surgically resected node-positive non-small cell lung cancer. Surgery Today. 46(10). 1196–1208. 10 indexed citations

17.

Shimizu, Kimihiro, Toshiteru Nagashima, Yoichi Ohtaki, et al.. (2016). Analysis of the variation pattern in right upper pulmonary veins and establishment of simplified vein models for anatomical segmentectomy. General Thoracic and Cardiovascular Surgery. 64(10). 604–611. 55 indexed citations

18.

Nagashima, Toshiteru, Kimihiro Shimizu, Yoichi Ohtaki, et al.. (2015). An analysis of variations in the bronchovascular pattern of the right upper lobe using three-dimensional CT angiography and bronchography. General Thoracic and Cardiovascular Surgery. 63(6). 354–360. 63 indexed citations

19.

Ikeda, Masaki, et al.. (2010). A case of recurrent delayed radiation myelopathy with 5-year remission interval. Rinsho Shinkeigaku. 50(6). 393–398. 1 indexed citations

20.

Obayashi, Kai, Ken-Ichi Nakamura, K. Hanada, et al.. (2006). VKORC1 gene variations are the major contributors of variation in warfarin dose in Japanese patients. Clinical Pharmacology & Therapeutics. 80(2). 169–178. 110 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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