Hiroaki Motoyama

912 total citations
64 papers, 685 citations indexed

About

Hiroaki Motoyama is a scholar working on Surgery, Oncology and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Hiroaki Motoyama has authored 64 papers receiving a total of 685 indexed citations (citations by other indexed papers that have themselves been cited), including 28 papers in Surgery, 16 papers in Oncology and 13 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Hiroaki Motoyama's work include Cholangiocarcinoma and Gallbladder Cancer Studies (13 papers), Reproductive Biology and Fertility (10 papers) and Pancreatic and Hepatic Oncology Research (10 papers). Hiroaki Motoyama is often cited by papers focused on Cholangiocarcinoma and Gallbladder Cancer Studies (13 papers), Reproductive Biology and Fertility (10 papers) and Pancreatic and Hepatic Oncology Research (10 papers). Hiroaki Motoyama collaborates with scholars based in Japan and Canada. Hiroaki Motoyama's co-authors include Yoshitaka Fujii, Akira Shimizu, Akira Kobayashi, Shinichi Miyagawa, Takahide Yokoyama, Hideharu Anazawa, Hiroaki Funahashi, Tsuyoshi Notake, Sadao Teshiba and Hiroshi Sakai and has published in prestigious journals such as SHILAP Revista de lepidopterología, PLoS ONE and Applied and Environmental Microbiology.

In The Last Decade

Hiroaki Motoyama

59 papers receiving 668 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Hiroaki Motoyama Japan 15 199 167 153 147 128 64 685
Henri Azaïs France 14 291 1.5× 64 0.4× 259 1.7× 112 0.8× 80 0.6× 94 823
Weishuai Liu China 16 73 0.4× 121 0.7× 114 0.7× 245 1.7× 106 0.8× 41 611
Milan Kos Croatia 14 97 0.5× 74 0.4× 20 0.1× 213 1.4× 81 0.6× 44 789
S Kirmani United States 11 125 0.6× 46 0.3× 147 1.0× 76 0.5× 145 1.1× 17 374
Yukihiro Umemoto Japan 16 158 0.8× 68 0.4× 159 1.0× 138 0.9× 37 0.3× 69 632
Qiyu Liu China 14 113 0.6× 36 0.2× 37 0.2× 74 0.5× 113 0.9× 56 495
Kyoko Yamada Japan 14 87 0.4× 29 0.2× 18 0.1× 328 2.2× 171 1.3× 68 968
Zhihui Gao China 17 121 0.6× 13 0.1× 33 0.2× 491 3.3× 138 1.1× 50 849
Amin Kamrani Iran 20 38 0.2× 104 0.6× 70 0.5× 276 1.9× 58 0.5× 39 711
Wen‐Chang Wang Taiwan 13 68 0.3× 21 0.1× 30 0.2× 332 2.3× 75 0.6× 55 759

Countries citing papers authored by Hiroaki Motoyama

Since Specialization
Citations

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

Fields of papers citing papers by Hiroaki Motoyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hiroaki Motoyama

This figure shows the co-authorship network connecting the top 25 collaborators of Hiroaki Motoyama. A scholar is included among the top collaborators of Hiroaki Motoyama 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 Hiroaki Motoyama. Hiroaki Motoyama 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.
Shimizu, Akira, Hiroaki Motoyama, Kôji Kubota, et al.. (2023). Impact of endothelial nitric oxide synthase activation on accelerated liver regeneration in a rat ALPPS model. World Journal of Gastroenterology. 29(5). 867–878.
2.
Hayashi, Hikaru, Akira Shimizu, Hiroaki Motoyama, et al.. (2022). Safety and oncological benefits of hepatectomy for hepatocellular carcinoma in octogenarians. Asian Journal of Surgery. 46(1). 366–372. 1 indexed citations
3.
Fujii, Yoshitaka, et al.. (2020). Effect of equilibration time on clinical and neonatal outcomes in human blastocysts vitrification. Reproductive Medicine and Biology. 19(3). 270–276. 8 indexed citations
4.
Kitagawa, Noriyuki, Hiroaki Motoyama, Akira Kobayashi, et al.. (2017). Adjuvant Chemotherapy with Gemcitabine for Resected Biliary Tract Cancer : A Single-Arm Phase 2 Study. 65(2). 99–111. 1 indexed citations
5.
Kobayashi, Akira, Yasunari Fujinaga, Takahide Yokoyama, et al.. (2016). Contrast-enhancement ratio on multiphase enhanced computed tomography predicts recurrence of pancreatic neuroendocrine tumor after curative resection. Pancreatology. 16(3). 397–402. 11 indexed citations
6.
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8.
Kobayashi, Akira, Takahide Yokoyama, Akira Shimizu, et al.. (2015). Biliary tract variations of the left liver with special reference to the left medial sectional bile duct in 500 patients. The American Journal of Surgery. 210(2). 351–356. 6 indexed citations
9.
Kobayashi, Akira, Takahide Yokoyama, Yasunari Fujinaga, et al.. (2015). Signal intensity of the pancreas on magnetic resonance imaging: Prediction of postoperative pancreatic fistula after a distal pancreatectomy using a triple-row stapler. Pancreatology. 15(4). 380–386. 12 indexed citations
10.
11.
Sakai, Hiroshi, Akira Kobayashi, Akira Shimizu, et al.. (2014). Three Cases of Hemorrhagic Hepatic Cyst with a Characteristic Contrast Pattern Observed Using Dynamic CT and MRI. The Japanese Journal of Gastroenterological Surgery. 47(9). 499–507. 1 indexed citations
12.
Sakai, Hiroshi, Akira Kobayashi, Takahide Yokoyama, et al.. (2014). A Case of Hepatic Cyst with Biliary Communication Treated with Laparoscopic Deroofing. Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association). 75(3). 769–774.
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14.
Sakai, Hiroshi, Yoh‐ichi Tagawa, Miho Tamai, et al.. (2010). Isolation and characterization of portal branch ligation-stimulated Hmga2-positive bipotent hepatic progenitor cells. Biochemical and Biophysical Research Communications. 403(3-4). 298–304. 10 indexed citations
15.
Shimizu, Yukio, et al.. (2007). AN ADULT CASE OF INTUSSUSCEPTION DUE TO CARCINOMA OF THE ILEUM AFTER TOTAL GASTRECTOMY FOR GASTRIC CANCER. Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association). 68(2). 374–378. 2 indexed citations
16.
Takeda, Satoru, et al.. (2003). An Open Prospective Multicentre Study in Pituitary Suppressed Japanese Women Undergoing Controlled Ovarian Hyperstimulation with Recombinant Follicle-stimulating Hormone (Org32489) to Compare Japanese and European IVF Results. 48(1). 49–60. 1 indexed citations
17.
Motoyama, Hiroaki, et al.. (2001). Overproduction of l -Lysine from Methanol by Methylobacillus glycogenes Derivatives Carrying a Plasmid with a Mutated dapA Gene. Applied and Environmental Microbiology. 67(7). 3064–3070. 23 indexed citations
18.
Fujii, Yoshitaka, et al.. (1997). A simple method for recovering the motile spermatozoa from extremely low quality sperm samples. Human Reproduction. 12(6). 1218–1221. 12 indexed citations
19.
Yoshioka, Tamotsu, et al.. (1987). Protective Effect of Vitamin E against Lipoperoxides in Developing Rats. Neonatology. 51(3). 170–176. 8 indexed citations
20.
Yoshioka, Tamotsu, et al.. (1987). Lipid Peroxidation and Vitamin E Levels during Pregnancy in Rats. Neonatology. 52(4). 223–231. 21 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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