Ryoji Ishii

1.1k total citations
54 papers, 871 citations indexed

About

Ryoji Ishii is a scholar working on Neurology, Surgery and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Ryoji Ishii has authored 54 papers receiving a total of 871 indexed citations (citations by other indexed papers that have themselves been cited), including 38 papers in Neurology, 16 papers in Surgery and 15 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Ryoji Ishii's work include Intracranial Aneurysms: Treatment and Complications (22 papers), Vascular Malformations Diagnosis and Treatment (11 papers) and Moyamoya disease diagnosis and treatment (10 papers). Ryoji Ishii is often cited by papers focused on Intracranial Aneurysms: Treatment and Complications (22 papers), Vascular Malformations Diagnosis and Treatment (11 papers) and Moyamoya disease diagnosis and treatment (10 papers). Ryoji Ishii collaborates with scholars based in Japan. Ryoji Ishii's co-authors include Ryuichi Tanaka, Kazuhiro Hirano, Akira Watanabe, Shigekazu Takeuchi, Jusuke Ito, Masaki Kamada, Hiroyuki Arai, Tetsuo Koike, Yoshihisa Fujita and Yasuo Suzuki and has published in prestigious journals such as The Journal of Clinical Endocrinology & Metabolism, Spine and Journal of neurosurgery.

In The Last Decade

Ryoji Ishii

53 papers receiving 813 citations

Peers

Countries citing papers authored by Ryoji Ishii

Since Specialization

Citations

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

Fields of papers citing papers by Ryoji Ishii

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ryoji Ishii

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

#	Work	Indexed citations
1	A case of chronic encapsulated intracerebral hematoma treated by endoscopic hematoma evacuation 2008 ·Nosotchu ·Kimihiko Yokosuka, Kazuhiro Hirano, (unknown), Norihiro Ishii, Yasuo Suzuki, Ryoji Ishii, Hirotake Nishimura	2
2	[A case of subdural hematoma associated with dural metastasis of lung cancer]. 2007 ·PubMed ·Norihiro Ishii, Kimihiko Yokosuka, (unknown), Kazuhiro Hirano, Yasuo Suzuki, Ryoji Ishii	10
3	Resection of arteriovenous malformation in the middle cerebellar peduncle by a posterior transpetrosal approach: illustration of a case and correlative microsurgical anatomy 2005 ·Surgical Neurology ·Norihiro Ishii, Ryoji Ishii, (unknown), (unknown), Yasuo Suzuki, Kazuhiro Hirano, (unknown), Kimihiko Yokosuka	3
4	Free Perforator Flap for the Treatment of Defects After Resection of Huge Arteriovenous Malformations in the Head and Neck Regions 2003 ·Annals of Plastic Surgery ·Isao Koshima, Yuzaburo Nanba, Tetsuya Tsutsui, Yoshio Takahashi, Akira Watanabe, Ryoji Ishii	25
5	Primary squamous cell carcinoma of the brain. A rare autopsy case 2003 ·Neuropathology ·Teruo Shirabe, (unknown), Akira Watanabe, Kazuhiro Imamura, Ryoji Ishii	10
6	L-type high voltage-gated calcium channels cause an increase in diazepam binding inhibitor mRNA expression after sustained exposure to ethanol in mouse cerebral cortical neurons 2003 ·Molecular Brain Research ·(unknown), Masashi Katsura, (unknown), Atsushi Tsujimura, Ryoji Ishii, Seitaro Ohkuma	14
7	Spontaneous Intracranial Hypotension Successfully Treated by Epidural Patching With Fibrin Glue 2000 ·Headache The Journal of Head and Face Pain ·Masaki Kamada, Yoshihisa Fujita, Ryoji Ishii, (unknown)	42
8	Endosaccular aneurysm occlusion with Guglielmi detachable coils for obstructive hydrocephalus caused by a large basilar tip aneurysm 1999 ·Journal of neurosurgery ·Akira Watanabe, Kazuhiro Imamura, Ryoji Ishii	9
9	Free Vascularized Deep Peroneal Nerve Grafts 1996 ·Journal of Reconstructive Microsurgery ·Isao Koshima, Kazuo Okumoto, N. Umeda, (unknown), Ryoji Ishii, Yoshio Nakayama	17
10	Central diabetes insipidus caused by nonspecific chronic inflammation of the hypothalamus: case report 1994 ·Surgical Neurology ·Akira Watanabe, Ryoji Ishii, Kazuhiro Hirano, Yasuo Suzuki, (unknown), Masaki Kamada, (unknown), (unknown), Teruo Shirabe	6
11	Cerebellar Hemorrhage Complicating Cervical Durotomy and Revision C1-C2 Fusion 1994 ·Spine ·Yoshihiro Mikawa, Ryo Watanabe, (unknown), Ryoji Ishii, Kazuhiro Hirano	49
12	Magnetic Resonance Imaging of Ecchordosis Physaliphora —Case Report— 1994 ·Neurologia medico-chirurgica ·Akira Watanabe, (unknown), Ryoji Ishii, Teruo Shirabe	16
13	Obstructive hydrocephalus caused by an abnormal vein in the aqueduct 1991 ·Journal of neurosurgery ·Akira Watanabe, Ryoji Ishii, Masaki Kamada, Yasuo Suzuki, Kazuhiro Hirano, (unknown)	18
14	Long Term Results of Ruptured Aneurysms Treated by Coating 1987 ·Neurosurgery ·Takashi Minakawa, Tetsuo Koike, Yukihiko Fujii, Ryoji Ishii, Ryuichi Tanaka, Hiroyuki Arai	37
15	Hemodynamic evaluation after surgical treatment for Moyamoya disease 1986 ·Nosotchu ·Ryoji Ishii, (unknown), Shigekazu Takeuchi, Ryuichi Tanaka	5
16	Transcatheter Embolization with Ivalon Particles in Cases of Intracranial Meningiomas 1985 ·Neurologia medico-chirurgica ·Tetsuo Koike, Osamu Sasaki, Ryoji Ishii, Ryuichi Tanaka, Jusuke Ito, (unknown), Hiroyuki Arai, Shigeki Kameyama, (unknown)	3
17	Ruptured Cerebral Aneurysms Not Diagnosed by the Initial Cerebral Angiography 1983 ·Neurologia medico-chirurgica ·Ryoji Ishii, Tetsuo Koike, (unknown), Shigekazu Takeuchi, Ryuichi Tanaka	2
18	Subarachnoid Hemorrhage of Unknown Cause 1983 ·Neurologia medico-chirurgica ·Ryoji Ishii, (unknown), Ryuichi Tanaka, Masao Watanabe, (unknown), Hiroyuki Arai	10
19	Clinical Analysis of Cerebral Vasospasm following Subarachnoid Hemorrhage 1980 ·Neurologia medico-chirurgica ·Tetsuo Koike, (unknown), Ryoji Ishii, (unknown), Shigeki Kameyama, Shigekazu Takeuchi	1
20	Changes in Cerebral Blood Flow following Rupture of Intracranial Aneurysms 1978 ·Neurologia medico-chirurgica ·Ryoji Ishii, (unknown), (unknown), Tetsuo Koike, (unknown), Shigeki Kameyama, Shigekazu Takeuchi	1

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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