Koji Hirata

1.1k total citations
74 papers, 791 citations indexed

About

Koji Hirata is a scholar working on Neurology, Electrical and Electronic Engineering and Condensed Matter Physics. According to data from OpenAlex, Koji Hirata has authored 74 papers receiving a total of 791 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Neurology, 17 papers in Electrical and Electronic Engineering and 15 papers in Condensed Matter Physics. Recurrent topics in Koji Hirata's work include GaN-based semiconductor devices and materials (15 papers), Intracranial Aneurysms: Treatment and Complications (14 papers) and Semiconductor materials and devices (8 papers). Koji Hirata is often cited by papers focused on GaN-based semiconductor devices and materials (15 papers), Intracranial Aneurysms: Treatment and Complications (14 papers) and Semiconductor materials and devices (8 papers). Koji Hirata collaborates with scholars based in Japan, United States and Australia. Koji Hirata's co-authors include Masayoshi Kosaki, Yuji Ando, Tatsuo Nakayama, Naoki Shibata, Takafumi Inoue, Yasuhiro Okamoto, Masaaki Kuzuhara, Hiroyuki Miyamoto, Masaru Yamamoto and Takeo MATSUMOTΟ and has published in prestigious journals such as Applied Physics Letters, Journal of Applied Physics and Langmuir.

In The Last Decade

Koji Hirata

63 papers receiving 753 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Koji Hirata Japan 14 213 208 130 113 109 74 791
Yue He China 21 76 0.4× 243 1.2× 246 1.9× 216 1.9× 41 0.4× 73 1.1k
K Takagi Japan 20 196 0.9× 241 1.2× 504 3.9× 42 0.4× 54 0.5× 87 1.4k
Hirotaka Suzuki Japan 17 108 0.5× 62 0.3× 175 1.3× 92 0.8× 8 0.1× 58 832
Jae Soo Shin South Korea 10 75 0.4× 29 0.1× 114 0.9× 37 0.3× 18 0.2× 28 447
Sheila Garcia Brazil 13 194 0.9× 75 0.4× 97 0.7× 120 1.1× 8 0.1× 67 604
Takeshi Nakao Japan 11 152 0.7× 127 0.6× 103 0.8× 49 0.4× 11 0.1× 55 475
Masahiro Araki Japan 13 95 0.4× 35 0.2× 155 1.2× 67 0.6× 8 0.1× 49 653
Yoko Tomita Australia 17 20 0.1× 79 0.4× 323 2.5× 70 0.6× 84 0.8× 70 976
Shingo Hirose Japan 16 31 0.1× 200 1.0× 251 1.9× 158 1.4× 9 0.1× 108 882

Countries citing papers authored by Koji Hirata

Since Specialization
Citations

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

Fields of papers citing papers by Koji Hirata

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Koji Hirata

This figure shows the co-authorship network connecting the top 25 collaborators of Koji Hirata. A scholar is included among the top collaborators of Koji Hirata 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 Koji Hirata. Koji Hirata 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.
Ito, Yoshiro, Yuji Matsumaru, Shun Tanaka, et al.. (2024). Chronological Changes in Embolization for Cerebral Arteriovenous Malformations: Impact of Endovascular Treatment Device Advancements. Journal of Neuroendovascular Therapy. 18(11). 279–286.
2.
Ito, Yoshiro, Koji Hirata, Masayuki Sato, et al.. (2024). Efficacy and Safety of Lumbar Drainage before Endovascular Treatment for Ruptured Intracranial Aneurysms. Journal of Neuroendovascular Therapy. 18(2). 29–36. 1 indexed citations
3.
Tanaka, Shun, Mikito Hayakawa, Ryohei Ono, et al.. (2024). Successful recovery of vision following intravenous thrombolysis using low-dose alteplase in central retinal artery occlusion. The American Journal of Emergency Medicine. 87. 216.e5–216.e9.
4.
Baba, Tomohisa, Masahiko Kusumoto, Terufumi Kato, et al.. (2023). Clinical and imaging features of interstitial lung disease in cancer patients treated with trastuzumab deruxtecan. International Journal of Clinical Oncology. 28(12). 1585–1596. 9 indexed citations
5.
Hirata, Koji, Aiki Marushima, Yukio Nagasaki, et al.. (2023). Efficacy of redox nanoparticles for improving survival of transplanted cells in a mouse model of ischemic stroke. Human Cell. 36(5). 1703–1715. 1 indexed citations
6.
Hirata, Koji, Noriyuki Kato, Tomosato Yamazaki, et al.. (2021). Arteriovenous fistula of the clival diploic vein associated with arteriovenous fistula of the posterior condylar canal. Interventional Neuroradiology. 27(5). 672–676. 1 indexed citations
7.
Hirata, Koji, Tomosato Yamazaki, Noriyuki Kato, Susumu Yasuda, & Akira Matsumura. (2020). Mechanical thrombectomy for occlusion near a ruptured intracranial aneurysm: A case report. Surgical Neurology International. 11. 120–120.
8.
Kimura, Hiroshi, Koji Hirata, Takao Koiso, et al.. (2014). Interdisciplinary Treatment of Ruptured Intracranial Aneurysm in Patients over 80 Years. Surgery for Cerebral Stroke. 42(4). 247–252. 1 indexed citations
9.
Ariyoshi, Noritaka, et al.. (2010). Enhanced Susceptibility of HLA-mediated Ticlopidine-induced Idiosyncratic Hepatotoxicity by CYP2B6 Polymorphism in Japanese. Drug Metabolism and Pharmacokinetics. 25(3). 298–306. 30 indexed citations
10.
11.
Nakayama, Tatsuo, Yuji Ando, Masayoshi Kosaki, et al.. (2008). Polarization Engineering on Buffer Layer in GaN-Based Heterojunction FETs. IEEE Transactions on Electron Devices. 55(2). 483–488. 29 indexed citations
12.
13.
Kawabata, Kohei, Takashi Azuma, Hiroyuki Yoshikawa, et al.. (2006). 1F-3 Site-Specific Contrast Imaging with Locally Induced Microbubbles from Liquid Precursors. 517–520. 14 indexed citations
14.
Yamaguchi, Yuji, et al.. (2006). New nanotechnology for the guided tissue regeneration of skin--potential of lyotropic liquid crystals.. PubMed. 61(2). 112–6. 10 indexed citations
15.
Gao, Feng, et al.. (2003). Non-steroidal anti-inflammatory drugs affect the methotrexate transport in IEC-6 cells. Life Sciences. 73(4). 437–446. 6 indexed citations
16.
Hirata, Koji, Yoichi Aso, & Masatsune Ishiguro. (1998). Properties of α-Mannosidase Partially Purified from the Apple Snail,Pomacea canaliculata. Bioscience Biotechnology and Biochemistry. 62(11). 2242–2245. 5 indexed citations
17.
Hirata, Koji, Yoichi Aso, Seiji Yasuda, & Masatsune Ishiguro. (1998). Purification ofPomacea canaliculataα-Fucosidase Isoforms with Different Thermostabilities. Bioscience Biotechnology and Biochemistry. 62(4). 807–810. 4 indexed citations
18.
Hirata, Koji, Yuko Nakahara, Yoshinobu Kimura, & Gunki Funatsu. (1996). Purification and Some Properties of aβ-Xylosidase and anα-Fucosidase from Apple Snails (Pomacea canaliculata). Bioscience Biotechnology and Biochemistry. 60(2). 249–254. 18 indexed citations
19.
Mizutani, Takashi, Koji Hirata, M. Hirayama, & Akihiro Ishida. (1990). Ultra-high speed semiconductor devices and low temperature electronics. Cryogenics. 30(12). 1024–1029. 1 indexed citations
20.
Hirata, Koji, et al.. (1987). Spectrophotometric determination of copper(II) with carbon disulfide, a secondary amine and triton X-100. Analytica Chimica Acta. 198. 271–275. 8 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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