Ichiro SAYAMA

721 total citations
45 papers, 532 citations indexed

About

Ichiro SAYAMA is a scholar working on Neurology, Pulmonary and Respiratory Medicine and Rheumatology. According to data from OpenAlex, Ichiro SAYAMA has authored 45 papers receiving a total of 532 indexed citations (citations by other indexed papers that have themselves been cited), including 33 papers in Neurology, 16 papers in Pulmonary and Respiratory Medicine and 9 papers in Rheumatology. Recurrent topics in Ichiro SAYAMA's work include Intracranial Aneurysms: Treatment and Complications (24 papers), Cerebrovascular and Carotid Artery Diseases (14 papers) and Moyamoya disease diagnosis and treatment (8 papers). Ichiro SAYAMA is often cited by papers focused on Intracranial Aneurysms: Treatment and Complications (24 papers), Cerebrovascular and Carotid Artery Diseases (14 papers) and Moyamoya disease diagnosis and treatment (8 papers). Ichiro SAYAMA collaborates with scholars based in Japan, Austria and Sweden. Ichiro SAYAMA's co-authors include L. M. Auer, Nobuyuki Yasui, Akifumi Suzuki, N Yasui, S Kawamura, Kazunori Uemura, F Shishido, Barbro B. Johansson, Shingo KAWAMURA and Kazuo Uemura and has published in prestigious journals such as Stroke, Journal of Cerebral Blood Flow & Metabolism and IEEE Transactions on Nuclear Science.

In The Last Decade

Ichiro SAYAMA

41 papers receiving 505 citations

Peers

Countries citing papers authored by Ichiro SAYAMA

Since Specialization

Citations

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

Fields of papers citing papers by Ichiro SAYAMA

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ichiro SAYAMA

This figure shows the co-authorship network connecting the top 25 collaborators of Ichiro SAYAMA. A scholar is included among the top collaborators of Ichiro SAYAMA 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 Ichiro SAYAMA. Ichiro SAYAMA 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	Robot Development and the Effect of Robot-aided Bilateral Training of Hemiplegic Upper Limbs in Subacute Stroke Patients : A Randomized Controlled Trial 2011 ·The Japanese Journal of Rehabilitation Medicine ·S. Aramaki, Ichiro SAYAMA, (unknown), Eriko Yokoyama, Tatsuo Shimomura, (unknown)	0
2	Haemodynamic and metabolic changes following extra-intracranial bypass surgery 1994 ·Acta Neurochirurgica ·S Kawamura, Ichiro SAYAMA, N Yasui, Kazunori Uemura	15
3	A case of aphemia due to right frontal lesion in a dextral. 1992 ·Shitsugoshō kenkyū ·Eriko Yokoyama, Yutaka Hirata, Ken Nagata, Akiko Nakano, Ichiro SAYAMA	0
4	Sequential changes in cerebral blood flow and metabolism in patients with subarachnoid haemorrhage 1992 ·Acta Neurochirurgica ·S Kawamura, Ichiro SAYAMA, N Yasui, Kazunori Uemura	54
5	Comparison of the clinical results of STA-MCA anastomosis and the medical treatment in the cerebral low perfusion patients with viable brain tissue 1991 ·Neurological Research ·Nobuyuki Yasui, Akifumi Suzuki, Ichiro SAYAMA, Shingo KAWAMURA, F Shishido, Kazuo Uemura	12
6	[Treatment for serious cases of ruptured intracranial aneurysms with severe subarachnoid clot]. 1991 ·PubMed ·Makoto Mizuno, N Yasui, Akifumi Suzuki, Hiromu Hadeishi, Satoshi Nakajima, (unknown), (unknown), Ichiro SAYAMA	1
7	Regional Evaluation of Cerebral Hemodynamics and Metabolism in the Arterio-Venous Malformation Using Positron Emission Tomography 1990 ·Surgery for Cerebral Stroke ·Ichiro SAYAMA, Makoto Mizuno, Nobuyuki Yasui, Iwao Kanno, F Shishido	1
8	Ruptured aneurysm of the distal anterior cerebral artery. 1988 ·Nosotchu ·Shingo KAWAMURA, Akifumi Suzuki, Ichiro SAYAMA, Nobuyuki Yasui	8
9	Cases with Ruptured Intracranial Aneurysms Accompanied by the Main Cerebral Arterial Occlusion-A surgical aspect- 1988 ·Surgery for Cerebral Stroke ·Ichiro SAYAMA, Shingo KAWAMURA, Akifumi Suzuki, Nobuyuki Yasui	1
10	Oxygen Extraction Fraction at Maximally Vasodilated Tissue in the Ischemic Brain Estimated from the Regional CO₂ Responsiveness Measured by Positron Emission Tomography 1988 ·Journal of Cerebral Blood Flow & Metabolism ·Iwao Kanno, Kazuo Uemura, (unknown), Matsutaro Murakami, Hidehiro Iida, Shuichi Miura, F Shishido, A Inugami, Ichiro SAYAMA	93
11	Clinical Outcome following Surgery for Intracerebral Hematoma associated with Ruptured Middle Cerebral Artery Aneurysm 1988 ·Neurologia medico-chirurgica ·Shingo KAWAMURA, Akifumi Suzuki, Ichiro SAYAMA, Nobuyuki Yasui	3
12	Therapy in Cases of Hypertensive Intracranial Hemorrhage Conbined with Intracranial Aneurysms 1988 ·Surgery for Cerebral Stroke ·(unknown), Masahito Nemoto, Ichiro SAYAMA, Akifumi Suzuki, Nobuyuki Yasui	1
13	Chondroid Chordoma with Parasellar Extension 1987 ·Neurologia medico-chirurgica ·Shingo KAWAMURA, Masahito Nemoto, Hiroyasu Kamiyama, Ichiro SAYAMA, Nobuyuki Yasui, (unknown)	1
14	A Basal Interhemispheric Operative Approach for Anterior Communicating Artery Aneurysms 1987 ·Neurologia medico-chirurgica ·Nobuyuki Yasui, Akifumi Suzuki, Ichiro SAYAMA, Shingo KAWAMURA	15
15	Indications for surgical treatment of cerebellar haemorrhage and infarction 1986 ·Acta Neurochirurgica ·L. M. Auer, (unknown), Ichiro SAYAMA	76
16	Clinical Grading for Subarachnoid Hemorrhage caused by Ruptured Intracranial Aneurysm 1985 ·Neurologia medico-chirurgica ·Nobuyuki Yasui, Shingo KAWAMURA, (unknown), Akifumi Suzuki, Hiroyasu Kamiyama, Ichiro SAYAMA, (unknown)	2
17	Intracranial pressure oscillations (B-waves) caused by oscillations in cerebrovascular volume 1983 ·Acta Neurochirurgica ·L. M. Auer, Ichiro SAYAMA	61
18	[Case of Moyamoya disease with agraphia caused by a frontal lesion]. 1983 ·PubMed ·(unknown), (unknown), Akihiro Suzuki, (unknown), Ichiro SAYAMA, Takashi Kobayashi	5
19	[Intraventricular hemorrhage in adults -studied for cases with difficult origin (author's transl)]. 1981 ·PubMed ·Ichiro SAYAMA, N Yasui, (unknown), Ito Z	0
20	[Intracerebral steal phenomenon appearing in the case of common carotid stenosis--in relation to occipital-vertebral anastomosis]. 1981 ·PubMed ·Ichiro SAYAMA, K. Nakajima, Akira Suzuki, (unknown), Ito Z	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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