Hajime Ohta

2.1k total citations
83 papers, 1.1k citations indexed

About

Hajime Ohta is a scholar working on Pulmonary and Respiratory Medicine, Epidemiology and Neurology. According to data from OpenAlex, Hajime Ohta has authored 83 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 36 papers in Pulmonary and Respiratory Medicine, 36 papers in Epidemiology and 21 papers in Neurology. Recurrent topics in Hajime Ohta's work include Cerebrovascular and Carotid Artery Diseases (20 papers), Acute Ischemic Stroke Management (16 papers) and Intracranial Aneurysms: Treatment and Complications (15 papers). Hajime Ohta is often cited by papers focused on Cerebrovascular and Carotid Artery Diseases (20 papers), Acute Ischemic Stroke Management (16 papers) and Intracranial Aneurysms: Treatment and Complications (15 papers). Hajime Ohta collaborates with scholars based in Japan, United States and India. Hajime Ohta's co-authors include Kenichi Harada, Kiyotaka Yokogami, Yasuni Nakanuma, Shinichiro Wakisaka, Shin‐ichi Nakano, L. Nelson Hopkins, Adnan H. Siddiqui, Elad I. Levy, B Portmann and Prodromos Hytiroglou and has published in prestigious journals such as SHILAP Revista de lepidopterología, PLoS ONE and Stroke.

In The Last Decade

Hajime Ohta

75 papers receiving 1.1k citations

Peers

Hajime Ohta
Soledad Retamozo Spain
A. Kostakis Greece
L. H. Weiland United States
S. Prévot France
R. Pérez-Álvarez Spain
Beyhan Demirhan Türkiye
Cándido Díaz‐Lagares Spain
Giuseppe Monti Italy
M. Pérez-de-Lis Spain
Themistoklis Spyridopoulos Greece
Soledad Retamozo Spain
Hajime Ohta
Citations per year, relative to Hajime Ohta Hajime Ohta (= 1×) peers Soledad Retamozo

Countries citing papers authored by Hajime Ohta

Since Specialization
Citations

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

Fields of papers citing papers by Hajime Ohta

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hajime Ohta

This figure shows the co-authorship network connecting the top 25 collaborators of Hajime Ohta. A scholar is included among the top collaborators of Hajime Ohta 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 Hajime Ohta. Hajime Ohta 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.
Yamashita, Shinji, Hideo Takeshima, Minako Azuma, et al.. (2022). T2-fluid-attenuated inversion recovery mismatch sign in lower grade gliomas: correlation with pathological and molecular findings. Brain Tumor Pathology. 39(2). 88–98. 15 indexed citations
2.
Takayama, Hideo, Takuya Komura, Takashi Kagaya, et al.. (2021). Clinical Features and Resistance to Entecavir Monotherapy of Patients with Hepatitis B. Canadian Journal of Gastroenterology and Hepatology. 2021(1). 3259833–3259833. 4 indexed citations
3.
Watanabe, Takashi, et al.. (2021). Selection of surgical approach for cerebellar hemangioblastomas based on venous drainage patterns. Neurosurgical Review. 44(6). 3567–3579. 3 indexed citations
4.
Azuma, Minako, Ichiro Ikushima, Kazuhiro Higuchi, et al.. (2021). Short-term experience with aspiration embolectomy using a ACE68 reperfusion catheter to treat embolic superior mesenteric artery occlusion. Emergency Radiology. 28(3). 675–678. 3 indexed citations
5.
6.
Shimizu, Yoshiaki, Takuya Komura, Takuya Seike, et al.. (2018). A case of an elderly female with diffuse hepatic hemangiomatosis complicated with multiple organic dysfunction and Kasabach–Merritt syndrome. Clinical Journal of Gastroenterology. 11(5). 411–416. 7 indexed citations
7.
Seike, Takuya, Takuya Komura, Yoshiaki Shimizu, et al.. (2018). A case of chronic pancreatitis exacerbation associated with pancreatic arteriovenous malformation: a case report and literature review. Clinical Journal of Gastroenterology. 12(2). 135–141. 9 indexed citations
8.
Seishima, Jun, Masatoshi Yamato, Masaki Miyazawa, et al.. (2016). Clinical utility of endoscopic ultrasound-guided fine-needle aspiration in mixed adenoneuroendocrine carcinoma with signet-ring cells of the pancreas: a case report and review of the literature. Clinical Journal of Gastroenterology. 9(1). 43–48. 13 indexed citations
9.
Hayashi, Tomoyuki, Hisashi Doyama, Yukihiro Shirota, et al.. (2014). Assessment of Still and Moving Images in the Diagnosis of Gastric Lesions Using Magnifying Narrow-Band Imaging in a Prospective Multicenter Trial. PLoS ONE. 9(7). e100857–e100857. 3 indexed citations
10.
Yokogami, Kiyotaka, Hajime Ohta, Shinji Yamashita, et al.. (2014). A case of primary diffuse leptomeningeal gliomatosis. Brain Tumor Pathology. 31(3). 177–181. 11 indexed citations
11.
Kakuda, Yuko, Kenichi Harada, Seiko Sawada‐Kitamura, et al.. (2013). Evaluation of a new histologic staging and grading system for primary biliary cirrhosis in comparison with classical systems. Human Pathology. 44(6). 1107–1117. 49 indexed citations
12.
Ogilvy, Christopher S., Kenneth V. Snyder, Hajime Ohta, et al.. (2010). Elective Stenting for Intracranial Stenosis Under Conscious Sedation. Neurosurgery. 67(5). 1189–1194. 25 indexed citations
13.
Harada, Kenichi, Shinji Shimoda, Hiroko Ikeda, et al.. (2010). Significance of periductal Langerhans cells and biliary epithelial cell-derived macrophage inflammatory protein-3α in the pathogenesis of primary biliary cirrhosis. Liver International. 31(2). 245–253. 30 indexed citations
14.
Natarajan, Sabareesh K., Yuval Karmon, Kenneth V. Snyder, et al.. (2010). Prospective Acute Ischemic Stroke Outcomes After Endovascular Therapy: A Real-World Experience. World Neurosurgery. 74(4-5). 455–464. 24 indexed citations
15.
Theise, Neil D., Kenichi Harada, Prodromos Hytiroglou, et al.. (2003). Hepatic ‘stem cell’ malignancies in adults: four cases. Histopathology. 43(3). 263–271. 157 indexed citations
16.
Sakai, Hideki, Nobuyuki Sakai, Toshio Higashi, et al.. (2002). Current Standard of Endovascular Treatment. Indication and Technical Problems of Stent Placement for Cervical Carotid Artery Stenosis.. Surgery for Cerebral Stroke. 30(5). 339–345.
17.
Kawabata, Yasuhiro, Izumi Nagata, Nobuyuki Sakai, et al.. (2001). Treatment of Bilateral Internal Carotid Artery Stenosis.. Surgery for Cerebral Stroke. 29(5). 339–344. 2 indexed citations
18.
Ohta, Hajime, Hideki Sakai, Nobuyuki Sakai, et al.. (2001). . 14(2). 52–56.
19.
Urabe, Takeshi, Hajime Ohta, Eiki Matsushita, et al.. (1994). PORTOHEPATIC HEMODYNAMICS AND PORTAL HYPERTENSIVE GASTROPATHY IN CIRRHOTIC PATIENTS. Acta gastro-enterologica belgica. 36(7). 1373–1378. 1 indexed citations
20.
Ohta, Hajime, Yasunari Nakamoto, Koichi Nishimura, et al.. (1991). Successful treatment by percutaneous transluminal angioplasty for membranous obstruction of inferior vena cava in a patient with systemic lupus erythematosus.. Kanzo. 32(8). 798–804. 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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