Kei Hayashi

1.1k total citations
67 papers, 696 citations indexed

About

Kei Hayashi is a scholar working on Surgery, Small Animals and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Kei Hayashi has authored 67 papers receiving a total of 696 indexed citations (citations by other indexed papers that have themselves been cited), including 35 papers in Surgery, 33 papers in Small Animals and 15 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Kei Hayashi's work include Veterinary Orthopedics and Neurology (30 papers), Orthopedic Surgery and Rehabilitation (11 papers) and Knee injuries and reconstruction techniques (10 papers). Kei Hayashi is often cited by papers focused on Veterinary Orthopedics and Neurology (30 papers), Orthopedic Surgery and Rehabilitation (11 papers) and Knee injuries and reconstruction techniques (10 papers). Kei Hayashi collaborates with scholars based in Japan, United States and United Kingdom. Kei Hayashi's co-authors include Masaru Honma, Katsunori Kondo, Naoki Kondo, Kokoro Shirai, Ichiro Kawachi, Tetsuya Ohira, Ryohei Nishimura, Mamiko Seki, Kazushi Asano and A. Takeuchi and has published in prestigious journals such as Journal of Clinical Oncology, SHILAP Revista de lepidopterología and PLoS ONE.

In The Last Decade

Kei Hayashi

61 papers receiving 660 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Kei Hayashi Japan 16 340 304 91 75 68 67 696
Judith van Luijk Netherlands 13 125 0.4× 100 0.3× 43 0.5× 24 0.3× 18 0.3× 18 567
Orhan Babucçu Türkiye 14 127 0.4× 429 1.4× 37 0.4× 8 0.1× 25 0.4× 41 784
Alon Lai United States 19 54 0.2× 181 0.6× 68 0.7× 43 0.6× 69 1.0× 37 968
S Armstrong Australia 12 17 0.1× 129 0.4× 44 0.5× 76 1.0× 205 3.0× 18 749
Constantinos Mourouzis Greece 15 21 0.1× 325 1.1× 151 1.7× 15 0.2× 18 0.3× 53 823
Robert Stephen United States 19 8 0.0× 588 1.9× 161 1.8× 30 0.4× 203 3.0× 43 1.3k
Osman Özcan Türkiye 14 85 0.3× 212 0.7× 174 1.9× 5 0.1× 156 2.3× 38 916
Vahid Zamani Iran 7 90 0.3× 603 2.0× 69 0.8× 28 0.4× 8 0.1× 12 925
Levent Altınel Türkiye 14 8 0.0× 357 1.2× 179 2.0× 89 1.2× 65 1.0× 37 571
Eileen M Weinheimer-Haus United States 16 7 0.0× 130 0.4× 101 1.1× 192 2.6× 35 0.5× 30 1.4k

Countries citing papers authored by Kei Hayashi

Since Specialization
Citations

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

Fields of papers citing papers by Kei Hayashi

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Kei Hayashi

This figure shows the co-authorship network connecting the top 25 collaborators of Kei Hayashi. A scholar is included among the top collaborators of Kei Hayashi 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 Hayashi. Kei Hayashi 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.
Hama, Takashi, Shintaro Ishikawa, Kei Hayashi, et al.. (2025). Nivolumab Plus 5-Fluorouracil/Leucovorin+Oxaliplatin for Gastric Cancer With Severe Peritoneal Metastasis. Anticancer Research. 45(4). 1583–1592.
2.
Hayashi, Kei, ITARU HASHIMOTO, Shinsuke Nagasawa, et al.. (2023). Evaluation of Irinotecan and Trifluridine/Tipiracil as Fourth-line Treatments After Third-line Nivolumab for Advanced Gastric Cancer. Anticancer Research. 43(6). 2831–2840.
3.
4.
HASHIMOTO, ITARU, Kazuki Kano, Shinsuke Nagasawa, et al.. (2023). Clinical Significance of Neutrophil-to-Lymphocyte Ratio/Serum Albumin Ratio in Patients With Metastatic Gastric or Gastroesophageal Junction Cancer Administered Trifluridine/Tipiracil. Anticancer Research. 43(4). 1689–1697. 5 indexed citations
5.
HASHIMOTO, ITARU, Kazuki Kano, Shinsuke Nagasawa, et al.. (2023). Clinical Effect of the C-Reactive Protein to Serum Albumin Ratio in Patients with Metastatic Gastric or Gastroesophageal Junction Cancer Treated with Trifluridine/Tipiracil. Journal of Personalized Medicine. 13(6). 923–923. 3 indexed citations
6.
Nagata, Ryuji, et al.. (2022). In vitro colonic fermentation characteristics of barley-koji differ from those of barley. Bioscience Biotechnology and Biochemistry. 86(9). 1286–1294. 1 indexed citations
7.
Shimada, Masakazu, et al.. (2022). Effects of long-term and high-dose administration of glucocorticoids on the cranial cruciate ligament in healthy beagle dogs. PLoS ONE. 17(1). e0262206–e0262206. 2 indexed citations
8.
Agnello, Kimberly A., et al.. (2022). Arthroscopic Caudal Cruciate Ligament Damage in Canine Stifles with Cranial Cruciate Ligament Disease. Veterinary and Comparative Orthopaedics and Traumatology. 35(4). 263–269. 3 indexed citations
9.
Kano, Kazuki, Takanobu Yamada, ITARU HASHIMOTO, et al.. (2022). Prognostic Impact of Immune-related Adverse Events in Gastric Cancer Patients Treated With Nivolumab. Anticancer Research. 42(3). 1535–1540. 6 indexed citations
10.
Jiang, Liping, Zhuo Li, Jessica J. Hayward, et al.. (2021). Genomic Prediction of Two Complex Orthopedic Traits Across Multiple Pure and Mixed Breed Dogs. Frontiers in Genetics. 12. 666740–666740. 5 indexed citations
11.
Hayashi, Kei, et al.. (2021). Intra-Articular Administration of a Synthetic Lubricin in Canine Stifles. Veterinary and Comparative Orthopaedics and Traumatology. 35(2). 90–95.
12.
Kayano, Mitsunori, Mizuki Tomihari, Po‐Yen Chou, et al.. (2020). Epidemiological Analysis of Avulsion Fractures in Dogs. 3(2). e60–e65. 1 indexed citations
13.
Honma, Masaru, Takashi Shibuya, Kei Hayashi, et al.. (2019). Suppression of podoplanin expression during differentiation of epidermal keratinocytes. The Journal of Dermatology. 46(10). 922–924. 2 indexed citations
14.
Kang, Byung‐Jae, et al.. (2016). Clinical evaluation of a mini locking plate system for fracture repair of the radius and ulna in miniature breed dogs. Veterinary and Comparative Orthopaedics and Traumatology. 29(6). 522–527. 11 indexed citations
15.
Seki, Mamiko, Kenji TESHIMA, Kazushi Asano, et al.. (2015). Evaluation of bone deformities of the femur, tibia, and patella in Toy Poodles with medial patellar luxation using computed tomography. Veterinary and Comparative Orthopaedics and Traumatology. 29(1). 29–38. 57 indexed citations
16.
17.
Nakamura, Shinsuke, Kei Hayashi, Kazuhiro Tsuruma, et al.. (2011). An Arylidene-Thiazolidinedione Derivative, GPU-4, without PPARγ Activation, Reduces Retinal Neovascularization. Current Neurovascular Research. 8(1). 25–34. 8 indexed citations
18.
Provenzano, Paolo P., Dennis M. Heisey, Kei Hayashi, Roderic S. Lakes, & Ray Vanderby. (2001). Sub-failure damage in ligament. 50. 49–50. 3 indexed citations
19.
Thabit, George, et al.. (1995). THE EFFECT OF NON-ABLATIVE LASER ENERGY ON JOINT CAPSULAR PROPERTIES. 15(2). 144. 20 indexed citations
20.
Nishimura, Ryohei, et al.. (1993). Sedative Effect Induced by a Combination of Medetomidine and Midazolam in Pigs.. Journal of Veterinary Medical Science. 55(5). 717–722. 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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