Koji Oka

1.0k total citations · 1 hit paper
23 papers, 727 citations indexed

About

Koji Oka is a scholar working on Neurology, Pulmonary and Respiratory Medicine and Rheumatology. According to data from OpenAlex, Koji Oka has authored 23 papers receiving a total of 727 indexed citations (citations by other indexed papers that have themselves been cited), including 7 papers in Neurology, 5 papers in Pulmonary and Respiratory Medicine and 5 papers in Rheumatology. Recurrent topics in Koji Oka's work include Cerebrovascular and Carotid Artery Diseases (4 papers), Intracranial Aneurysms: Treatment and Complications (4 papers) and Eosinophilic Disorders and Syndromes (3 papers). Koji Oka is often cited by papers focused on Cerebrovascular and Carotid Artery Diseases (4 papers), Intracranial Aneurysms: Treatment and Complications (4 papers) and Eosinophilic Disorders and Syndromes (3 papers). Koji Oka collaborates with scholars based in Japan and United States. Koji Oka's co-authors include Hideyuki Saya, Hideo Nakamura, Yukitaka Ushio, Jun‐ichi Kuratsu, Masato Kochi, Keishi Makino, Hirofumi Hirano, Naoki Shinojima, Takanori Kamiryo and Shoji Shiraishi and has published in prestigious journals such as SHILAP Revista de lepidopterología, Oncogene and Acta Oto-Laryngologica.

In The Last Decade

Koji Oka

15 papers receiving 714 citations

Hit Papers

Prognostic value of epidermal growth factor receptor in p... 2003 2026 2010 2018 2003 100 200 300 400 500
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. Prognostic value of epidermal growth factor receptor in patients with glioblastoma multiforme.
    2003 536 citations Naoki Shinojima, Kenji Tada et al. PubMed profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Koji Oka Japan 9 351 310 227 195 138 23 727
Takanori Kamiryo Japan 6 478 1.4× 341 1.1× 200 0.9× 230 1.2× 141 1.0× 7 752
Michael Badruddoja United States 8 387 1.1× 238 0.8× 167 0.7× 160 0.8× 152 1.1× 20 681
Kenneth Aldape United States 9 322 0.9× 286 0.9× 120 0.5× 149 0.8× 135 1.0× 21 648
Kerstin Kaulich Germany 14 517 1.5× 296 1.0× 159 0.7× 277 1.4× 121 0.9× 20 790
Sandra Boots‐Sprenger Netherlands 11 511 1.5× 425 1.4× 129 0.6× 324 1.7× 157 1.1× 12 829
Shoji Shiraishi Japan 10 601 1.7× 396 1.3× 235 1.0× 260 1.3× 179 1.3× 10 947
I‐Mei Siu United States 16 292 0.8× 494 1.6× 160 0.7× 190 1.0× 121 0.9× 22 823
T. Mikkelsen United States 11 515 1.5× 270 0.9× 134 0.6× 205 1.1× 220 1.6× 21 731
Shannon Chang United States 14 635 1.8× 281 0.9× 196 0.9× 208 1.1× 248 1.8× 37 928
David Shih United States 16 533 1.5× 668 2.2× 155 0.7× 230 1.2× 113 0.8× 35 1.1k

Countries citing papers authored by Koji Oka

Since Specialization
Citations

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

Fields of papers citing papers by Koji Oka

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Koji Oka

This figure shows the co-authorship network connecting the top 25 collaborators of Koji Oka. A scholar is included among the top collaborators of Koji Oka 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 Oka. Koji Oka 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.
Endo, Hideki, et al.. (2024). Cerebral hyperperfusion syndrome after endovascular reperfusion therapy for medium vessel occlusion: A case report. SHILAP Revista de lepidopterología. 19(5). 1771–1775.
2.
Sugimoto, Yuka, et al.. (2024). Venetoclax is effective for chronic myelomonocytic leukemia blastic transformation with RUNX1 mutation. Hematology. 29(1). 2392908–2392908.
3.
4.
Endo, Hideki, et al.. (2022). Aberrant right subclavian artery with right type 1 proatlantal artery and segmental dysplasia of the right internal carotid artery: a case report. Surgical and Radiologic Anatomy. 44(5). 709–713. 1 indexed citations
5.
6.
Endo, Hideki, et al.. (2022). Large vessel occlusions requiring repeated mechanical thrombectomy caused by silent myocardial infarction in a young adult. Journal of Stroke and Cerebrovascular Diseases. 31(11). 106761–106761.
7.
Endo, Hideki, et al.. (2022). Proximal migration of a tapered open-cell stent after carotid artery stenting for restenosis following endarterectomy. Journal of Stroke and Cerebrovascular Diseases. 32(3). 106953–106953. 1 indexed citations
8.
Endo, Hideki, et al.. (2022). Mechanical thrombectomy for acute fetal posterior cerebral artery occlusion with a hidden unruptured cerebral aneurysm: illustrative case. Journal of Neurosurgery Case Lessons. 4(9). CASE22291–CASE22291.
9.
Matsuda, M, et al.. (2021). Extremely tortuous superior cerebellar artery mimicking an aneurysm. Surgical Neurology International. 12. 569–569. 1 indexed citations
10.
Endo, Hideki, et al.. (2012). [Non-bifurcating cervical carotid artery: a case report].. PubMed. 64(4). 486–7.
11.
Takeuchi, Kazuhiko, et al.. (2008). Cochlear implantation in complete remission in a patient with leukemia. Acta Oto-Laryngologica. 128(7). 821–823. 4 indexed citations
12.
Oka, Koji, Hirokazu Nakamine, Kunihiko Maeda, et al.. (2008). Primary histiocytic sarcoma of the spleen associated with hemophagocytosis. International Journal of Hematology. 87(4). 405–409. 13 indexed citations
13.
Monma, Fumihiko, Kazuhiro Nishii, Eiji Usui, et al.. (2005). Molecular analysis of PDGFRα/β genes in core binding factor leukemia with eosinophilia. European Journal Of Haematology. 76(1). 18–22. 10 indexed citations
14.
Shinojima, Naoki, Kenji Tada, Shoji Shiraishi, et al.. (2003). Prognostic value of epidermal growth factor receptor in patients with glioblastoma multiforme.. PubMed. 63(20). 6962–70. 536 indexed citations breakdown →
15.
Oka, Koji, et al.. (2002). Environmental Assessment for Recovery of Copper from Printed Wiring Boards.. Journal of the Society of Powder Technology Japan. 39(3). 154–160. 1 indexed citations
16.
Murata, Tetsuya, Shigeo Nakamura, Koji Oka, et al.. (2000). Granzyme B‐positive primary gastric T‐cell lymphoma: Gastric T‐cell lymphoma with the possibility of extrathymic T cell origin. Pathology International. 50(10). 853–857. 10 indexed citations
17.
Murata, Tetsuya, et al.. (2000). Gastrointestinal Stromal Tumors of the Small Intestine That Expressed c-kit Protein.. Internal Medicine. 39(11). 914–919. 10 indexed citations
18.
Nakamura, Hideo, Mitsuhiro Yoshida, Hiromasa Tsuiki, et al.. (1998). Identification of a human homolog of the Drosophila neuralized gene within the 10q25.1 malignant astrocytoma deletion region. Oncogene. 16(8). 1009–1019. 62 indexed citations
19.
Gotoda, Hiroko, Miri Fujita, Kazuo Nagashima, et al.. (1996). Cerebral germinoma with marked granulomatous inflammation: Granulomatous germinoma. Neuropathology. 16(3). 165–171. 9 indexed citations
20.
Oka, Koji, et al.. (1991). Detection of loss of heterozygosity in the p53 gene in renal cell carcinoma and bladder cancer using the polymerase chain reaction. Molecular Carcinogenesis. 4(1). 10–13. 48 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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