Hiroko Oka

3.4k total citations
79 papers, 2.6k citations indexed

About

Hiroko Oka is a scholar working on Hepatology, Epidemiology and Molecular Biology. According to data from OpenAlex, Hiroko Oka has authored 79 papers receiving a total of 2.6k indexed citations (citations by other indexed papers that have themselves been cited), including 27 papers in Hepatology, 21 papers in Epidemiology and 13 papers in Molecular Biology. Recurrent topics in Hiroko Oka's work include Hepatocellular Carcinoma Treatment and Prognosis (24 papers), Liver Disease Diagnosis and Treatment (15 papers) and Oral microbiology and periodontitis research (6 papers). Hiroko Oka is often cited by papers focused on Hepatocellular Carcinoma Treatment and Prognosis (24 papers), Liver Disease Diagnosis and Treatment (15 papers) and Oral microbiology and periodontitis research (6 papers). Hiroko Oka collaborates with scholars based in Japan, United States and Switzerland. Hiroko Oka's co-authors include Tetsuo Kuroki, Masatoshi Kudo, Yukio Osaki, Kenzo Kobayashi, Sukeo Yamamoto, Akihiro Tamori, Toshihito Seki, Hiroshi Kasugai, Takashi Matsunaga and Narito KURIOKA and has published in prestigious journals such as SHILAP Revista de lepidopterología, Annals of Internal Medicine and Hepatology.

In The Last Decade

Hiroko Oka

70 papers receiving 2.6k citations

Peers

Hiroko Oka

HEPAT

EPIDE

SURGE

David Semela Switzerland

Keisuke Hamasaki Japan

Yuka Takahashi Japan

Sanjay Bansal United Kingdom

Kwan Sik Lee South Korea

Francesco Tovoli Italy

Harry L.A. Janssen Netherlands

Hyo-Suk Lee South Korea

Jeong Heo South Korea

Jin Mo Yang South Korea

David Semela Switzerland

Hiroko Oka

1.8k ×1.2

HEPAT

1.3k ×1.1

EPIDE

833 ×1.7

401 ×1.0

562 ×1.6

SURGE

Citations per year, relative to Hiroko Oka Hiroko Oka (= 1×) peers David Semela

Countries citing papers authored by Hiroko Oka

Since Specialization

Citations

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

Fields of papers citing papers by Hiroko Oka

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hiroko Oka

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

Oka, Hiroko, et al.. (2023). Age estimation using post-mortem computed tomography and fetal dental radiographic findings in an early to mid-pregnancy fetus: A case report. Legal Medicine. 62. 102232–102232.

Oka, Hiroko, et al.. (2022). Some tips on age estimation using DNA methylation in saliva samples as an index across the Japanese and Indonesian ethnicities. Legal Medicine. 56. 102042–102042. 6 indexed citations

Yamashiro, Keisuke, et al.. (2021). Allergic Reaction to Zirconia Ceramic Bridge Cementation Using a Dental Adhesive Resin Cement: a Case Report. SN Comprehensive Clinical Medicine. 3(1). 327–330. 3 indexed citations

Yamazaki, Osamu, et al.. (2014). Repeated bile duct recurrence of hepatocellular carcinoma treated by repeated hepatic resection and transcatheter arterial chemoembolization: a report of super elderly case. Kanzo. 55(8). 468–478.

Oka, Hiroko, Osamu Yamazaki, Seiko Yamaguchi, et al.. (2011). Two cases of advanced hepatocellular carcinoma successfully treated with Peg-INFα2a once every 2 weeks as a single agent. Kanzo. 52(5). 303–313.

Ishikawa, Yuko, et al.. (2007). A case of multiple hepatic cysts that presented a cystadenocarcinoma-like hemorrhagic lesion during follow-up. Kanzo. 48(11). 546–552. 3 indexed citations

Shimizu, Sadatoshi, Osamu Yamazaki, Akishige Kanazawa, et al.. (2006). Two cases of hepatocellular carcinoma with metastasis to the inferior vena cava. Kanzo. 47(4). 223–228. 2 indexed citations

Dalla-Bona, Diego, Eiji Tanaka, Hiroko Oka, et al.. (2006). Effects of ultrasound on cementoblast metabolism in vitro. Ultrasound in Medicine & Biology. 32(6). 943–948. 39 indexed citations

Mita, Masatoshi, Hiroko Oka, Michael C. Thorndyke, et al.. (2004). Inhibitory Effect of a SALMFamide Neuropeptide on Secretion of Gonad-Stimulating Substance from Radial Nerves in the Starfish Asterina pectinifera. ZOOLOGICAL SCIENCE. 21(3). 299–303. 16 indexed citations

10.

Yamazaki, Osamu, Sadatoshi Shimizu, Yutaka Tamamori, et al.. (2003). Indication and limitation of surgical treatment for hepatocellular carcinoma with tumor thrombus in the portal vein. Kanzo. 44(5). 211–221. 1 indexed citations

11.

Kioka, Kiyohide, Takashi Nakai, Tetsuya Aoki, et al.. (2001). Usefulness of percutaneous microwave coagulation therapy in the treatment of hepatocellular carcinoma. Journal of Microwave Surgery. 19. 105–108. 1 indexed citations

12.

Kioka, Kiyohide, et al.. (2000). Clinical result of percutaneous microwave coagulation therapy for hepatocellular carcinoma. Journal of Microwave Surgery. 18. 51–54. 1 indexed citations

13.

Yamazaki, Osamu, Ikko Higaki, Shuichi Kawai, et al.. (2000). Erythrocytosis caused by an erythropoietin-producing hepatocellular carcinoma. Journal of Surgical Oncology. 75(3). 197–202. 26 indexed citations

14.

So, Kenji, Kiyohide Kioka, Hiroko Oka, et al.. (1996). Assessment of the efficacy of microwave coagulation therapy for hepatocellular carcinoma by imaging techniques.. Kanzo. 37(10). 563–571. 3 indexed citations

15.

Okawa, Kiyotaka, Hiroshi Satō, Kenji Watanabe, et al.. (1995). A CASE OF METASTATIC COLONIC CANCER, SECONDARY TO LUNG CANCER, SHOWING BULL'S EYE APPEARANCE. Acta gastro-enterologica belgica. 37(3). 1 indexed citations

16.

Shuto, Taichi, Hiroaki Kinoshita, Kazuhiro Hirohashi, et al.. (1992). Two cases of well differentiated hepatocellular carcinoma with an unusual supply of portal blood.. Kanzo. 33(3). 252–258. 1 indexed citations

17.

Kanno, Toru, et al.. (1990). Clinical study of echogenic small hepatocellular carcinoma (.LEQ.2cm) with fatty metamorphosis.. Kanzo. 31(6). 647–652. 1 indexed citations

18.

Oka, Hiroko, et al.. (1987). Three cases of focal fatty change associated with cirrhosis of the liver.. Kanzo. 28(2). 236–242. 1 indexed citations

19.

Asai, Hitoshi, et al.. (1981). ULTRASONOGRAPHIC DIAGNOSIS OF GASTRIC CARCINOMA. The Japanese Journal of Gastroenterological Surgery. 14(7). 1029–1038.

20.

Minaguchi, Kiyoshi, et al.. (1977). Studies of genetic markers in human saliva. (IV). Frequencies of a new polymorphic protein (Pm) systems from parotid saliva of Japanese in Tokyo.. PubMed. 18(1). 13–7. 1 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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