Ryoichi Otsubo

715 total citations
24 papers, 525 citations indexed

About

Ryoichi Otsubo is a scholar working on Pulmonary and Respiratory Medicine, Neurology and Cardiology and Cardiovascular Medicine. According to data from OpenAlex, Ryoichi Otsubo has authored 24 papers receiving a total of 525 indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Pulmonary and Respiratory Medicine, 10 papers in Neurology and 8 papers in Cardiology and Cardiovascular Medicine. Recurrent topics in Ryoichi Otsubo's work include Cerebrovascular and Carotid Artery Diseases (8 papers), Cardiac tumors and thrombi (5 papers) and Aortic Thrombus and Embolism (4 papers). Ryoichi Otsubo is often cited by papers focused on Cerebrovascular and Carotid Artery Diseases (8 papers), Cardiac tumors and thrombi (5 papers) and Aortic Thrombus and Embolism (4 papers). Ryoichi Otsubo collaborates with scholars based in Japan and Brazil. Ryoichi Otsubo's co-authors include Kazuo Minematsu, Kazuyuki Nagatsuka, Masahiro Yasaka, Hiroaki Naritomi, Hiroshi Oe, Kotaro Miyashita, Takenori Yamaguchi, Hitonobu Tomoike, Yoshihiro Kokubo and Toshiyuki Miyata and has published in prestigious journals such as Stroke, Annals of Neurology and American Journal of Neuroradiology.

In The Last Decade

Ryoichi Otsubo

21 papers receiving 507 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Ryoichi Otsubo Japan	10	236	198	134	129	111	24	525
Yasuhisa Akaiwa Japan	8	57 0.2×	186 0.9×	43 0.3×	48 0.4×	109 1.0×	27	393
Shinichi Nomoto Japan	10	89 0.4×	125 0.6×	105 0.8×	86 0.7×	40 0.4×	21	415
C. Jahn Germany	15	69 0.3×	27 0.1×	75 0.6×	259 2.0×	145 1.3×	31	787
Z. Tsutsumi Japan	14	34 0.1×	57 0.3×	86 0.6×	128 1.0×	102 0.9×	29	597
F. Heller Belgium	15	57 0.2×	27 0.1×	98 0.7×	156 1.2×	202 1.8×	51	709
I.J.A.M. Jonkers Netherlands	13	56 0.2×	11 0.1×	110 0.8×	136 1.1×	210 1.9×	18	541
Gabriella Pecci Italy	6	46 0.2×	74 0.4×	66 0.5×	21 0.2×	34 0.3×	8	453
Rosemarie Mellado Chile	13	83 0.4×	16 0.1×	217 1.6×	40 0.3×	88 0.8×	25	568
Khalid A. Tazi France	17	150 0.6×	96 0.5×	70 0.5×	464 3.6×	58 0.5×	28	1.0k
Weiping Sun China	14	63 0.3×	13 0.1×	84 0.6×	139 1.1×	40 0.4×	41	473

Countries citing papers authored by Ryoichi Otsubo

Since Specialization

Citations

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

Fields of papers citing papers by Ryoichi Otsubo

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ryoichi Otsubo

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

Abe, Yuko, et al.. (2019). A case of catastrophic antiphospholipid syndrome with cerebral venous thrombosis. Nosotchu. 42(5). 429–434. 1 indexed citations

Gon, Yasufumi, et al.. (2012). Case of an elderly patient with community acquired bacterial meningitis due to extended spectrum β lactamase producing Escherichia coli. Rinsho Shinkeigaku. 52(1). 12–18. 3 indexed citations

Kuwashiro, Takahiro, Ḱazunori Toyoda, Sohei Yoshimura, et al.. (2010). Atheromatous Plaques at the Origin of the Left Subclavian Artery in Patients with Ischemic Stroke. Cerebrovascular Diseases. 29(3). 290–296. 7 indexed citations

Kawano, Hiroyuki, Ḱazunori Toyoda, Ryoichi Otsubo, Tomohito Hishikawa, & Kazuo Minematsu. (2009). Tortuous Carotid Artery Lumens in Takayasu's Arteritis. Journal of Stroke and Cerebrovascular Diseases. 18(5). 403–404. 4 indexed citations

Yamaoka, Masaya, Takashi Noda, Hikaru Nagasawa, et al.. (2008). Asystole Caused by Vegetation and Abscess of Right Ventricle Attached to a Tip of Pacemaker Lead. Pacing and Clinical Electrophysiology. 31(8). 1083–1084.

Ogata, Jun, Chikao Yutani, Ryoichi Otsubo, et al.. (2008). Heart and vessel pathology underlying brain infarction in 142 stroke patients. Annals of Neurology. 63(6). 770–781. 50 indexed citations

Yin, Tong, Keiko Maekawa, Kei Kamide, et al.. (2008). Genetic Variations of CYP2C9 in 724 Japanese Individuals and Their Impact on the Antihypertensive Effects of Losartan. Hypertension Research. 31(8). 1549–1557. 63 indexed citations

Yin, Tong, Hironori Hanada, Kotaro Miyashita, et al.. (2007). No association between vitamin K epoxide reductase complex subunit 1-like 1 (VKORC1L1) and the variability of warfarin dose requirement in a Japanese patient population. Thrombosis Research. 122(2). 179–184. 10 indexed citations

Kimura, Rina, Yoshihiro Kokubo, Kotaro Miyashita, et al.. (2006). Polymorphisms in Vitamin K-Dependent γ-Carboxylation-Related Genes Influence Interindividual Variability in Plasma Protein C and Protein S Activities in the General Population. International Journal of Hematology. 84(5). 387–397. 32 indexed citations

10.

Kimura, Rina, Kotaro Miyashita, Yoshihiro Kokubo, et al.. (2006). Genotypes of vitamin K epoxide reductase, γ-glutamyl carboxylase, and cytochrome P450 2C9 as determinants of daily warfarin dose in Japanese patients. Thrombosis Research. 120(2). 181–186. 140 indexed citations

11.

Tanaka, Makiko, Masahiro Yasaka, Keiko Nagano, et al.. (2005). Moderate Atheroma of the Aortic Arch and the Risk of Stroke. Cerebrovascular Diseases. 21(1-2). 26–31. 16 indexed citations

12.

Yakushiji, Yusuke, Yasukazu Terasaki, Ryoichi Otsubo, et al.. (2005). Brain Embolism Caused by a Mobile Aortic Thrombus with Iron Deficiency Anemia. Cerebrovascular Diseases. 20(6). 475–478. 7 indexed citations

13.

Yasaka, Masahiro, Ryoichi Otsubo, Hiroshi Oe, & Kazuo Minematsu. (2005). Is Stroke a Paradoxical Embolism in Patients with Patent Foramen Ovale?. Internal Medicine. 44(5). 434–438. 33 indexed citations

14.

Yasaka, Masahiro, et al.. (2005). Right-to-Left Shunt Evaluated at the Aortic Arch by Contrast-Enhanced Transesophageal Echocardiography. Journal of Ultrasound in Medicine. 24(2). 155–159. 8 indexed citations

15.

Nagano, Keiko, Ryoichi Otsubo, Masahiro Yasaka, et al.. (2004). [Stroke recurrence in patients with brain embolism and patent foramen ovale--association with deep vein thrombosis detected by ultrasonography].. PubMed. 44(1). 7–13. 1 indexed citations

16.

Yasaka, Masahiro, Ryoichi Otsubo, Kazumi Kimura, et al.. (2002). Transoral carotid ultrasonography. Nosotchu. 24(4). 415–419. 7 indexed citations

17.

Otsubo, Ryoichi, Kazuo Minematsu, & Shotai Kobayashi. (2001). Hemorrhagic infarction and its predisposing factors in acute ischemic stroke.. Nosotchu. 23(3). 227–233.

18.

Koga, Masatoshi, et al.. (2000). . 13(3). 96–99.

19.

Kimura, Kazumi, Masahiro Yasaka, Kuniyasu Wada, et al.. (1999). Diagnosis of middle cerebral artery stenosis by transcranial color-coded real-time sonography.. American Journal of Neuroradiology. 19(10). 1893–6. 20 indexed citations

20.

Yasaka, Masahiro, Kazumi Kimura, Ryoichi Otsubo, et al.. (1998). Transoral Carotid Ultrasonography. Stroke. 29(7). 1383–1388. 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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