Hajime Maruyama

721 total citations
52 papers, 546 citations indexed

About

Hajime Maruyama is a scholar working on Epidemiology, Pulmonary and Respiratory Medicine and Neurology. According to data from OpenAlex, Hajime Maruyama has authored 52 papers receiving a total of 546 indexed citations (citations by other indexed papers that have themselves been cited), including 24 papers in Epidemiology, 22 papers in Pulmonary and Respiratory Medicine and 15 papers in Neurology. Recurrent topics in Hajime Maruyama's work include Acute Ischemic Stroke Management (24 papers), Cerebrovascular and Carotid Artery Diseases (18 papers) and Atrial Fibrillation Management and Outcomes (9 papers). Hajime Maruyama is often cited by papers focused on Acute Ischemic Stroke Management (24 papers), Cerebrovascular and Carotid Artery Diseases (18 papers) and Atrial Fibrillation Management and Outcomes (9 papers). Hajime Maruyama collaborates with scholars based in Japan and United States. Hajime Maruyama's co-authors include Norio Tanahashi, Takuya Fukuoka, Yuji Kato, Ichiro Deguchi, Yohsuke Horiuchi, Takeshi Hayashi, Harumitsu Nagoya, Tomohisa Dembo, Akira Uchino and Hidetaka Takeda and has published in prestigious journals such as Brain Research, Journal of Neurology and Biological and Pharmaceutical Bulletin.

In The Last Decade

Hajime Maruyama

51 papers receiving 540 citations

Peers

Hajime Maruyama

EPIDE

CCM

PRM

NEURO

SURGE

Christina Zompola Greece

Arata Abe Japan

Anetta Lasek‐Bal Poland

Moo‐Young Ahn South Korea

A. Mair Austria

Marie Josee E. van Rijn Netherlands

Haiqiang Qin China

Tak Hong Tsoi China

Luis Manuel Murillo-Bonilla Mexico

Takehiko Nagao Japan

Christina Zompola Greece

Hajime Maruyama

270 ×1.5

EPIDE

142 ×0.8

CCM

197 ×1.2

PRM

223 ×1.6

NEURO

64 ×0.7

SURGE

Citations per year, relative to Hajime Maruyama Hajime Maruyama (= 1×) peers Christina Zompola

Countries citing papers authored by Hajime Maruyama

Since Specialization

Citations

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

Fields of papers citing papers by Hajime Maruyama

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hajime Maruyama

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

Maruyama, Hajime, et al.. (2023). Simultaneous Presentation of Brainstem and Cerebellar Posterior Reversible Encephalopathy Syndrome With Acute Cerebral Infarction. Cureus. 15(2). e34843–e34843. 2 indexed citations

Kato, Yuji, Takeshi Hayashi, Hajime Maruyama, et al.. (2019). Resumption of Direct Oral Anticoagulants in Patients with Acute Spontaneous Intracerebral Hemorrhage. Journal of Stroke and Cerebrovascular Diseases. 28(10). 104292–104292. 10 indexed citations

Uchino, Akira, et al.. (2019). Bilateral persistent hypoglossal arteries: a case report and literature review. Surgical and Radiologic Anatomy. 41(9). 1083–1085. 1 indexed citations

Kato, Yuji, et al.. (2018). The dose of direct oral anticoagulants and outcomes of intracerebral hemorrhage: Preliminary findings. Clinical Neurology and Neurosurgery. 174. 63–67. 2 indexed citations

Kato, Yuji, Takeshi Hayashi, Yoshihide Sehara, et al.. (2015). Ischemic Stroke with Essential Thrombocythemia: A Case Series. Journal of Stroke and Cerebrovascular Diseases. 24(4). 890–893. 22 indexed citations

Deguchi, Ichiro, Takuya Fukuoka, Takeshi Hayashi, et al.. (2014). Clinical Outcomes of Persistent and Paroxysmal Atrial Fibrillation in Patients with Stroke. Journal of Stroke and Cerebrovascular Diseases. 23(10). 2840–2844. 13 indexed citations

Maruyama, Hajime, Takuya Fukuoka, Ichiro Deguchi, et al.. (2014). Relationship between Smoking and Responsiveness to Clopidogrel in Non-cardiogenic Ischemic Stroke Patients. Internal Medicine. 53(22). 2575–2579. 11 indexed citations

Hayashi, Takeshi, Ichiro Deguchi, Takuya Fukuoka, et al.. (2014). MRI abnormality of the pulvinar in patients with status epilepticus. Journal of Neuroradiology. 41(4). 220–226. 36 indexed citations

Uchino, Akira, et al.. (2014). Left carotid-anterior cerebral artery anastomosis diagnosed by MR angiography: a case report. Surgical and Radiologic Anatomy. 37(3). 311–313. 6 indexed citations

10.

Fukuoka, Takuya, Yuji Kato, Ichiro Deguchi, et al.. (2014). A Case of Anterior Cerebral Artery Dissection Caused by Scuba Diving. Journal of Stroke and Cerebrovascular Diseases. 23(7). 1982–1984. 6 indexed citations

11.

Fukuoka, Takuya, Takeshi Hayashi, Yuji Kato, et al.. (2014). Research Article: Clinical Characteristics of Isolated Anterior Cerebral Artery Territory Infarction Due to Arterial Dissection. Journal of Stroke and Cerebrovascular Diseases. 23(10). 2907–2913. 7 indexed citations

12.

Hayashi, Takeshi, Ichiro Deguchi, Takuya Fukuoka, et al.. (2013). A Case of Nonconvulsive Status Epilepticus with a Reversible Contralateral Cerebellar Lesion: Temporal Changes in Magnetic Resonance Imaging and Single-Photon Emission Computed Tomography Finding. Journal of Stroke and Cerebrovascular Diseases. 22(8). e639–e642. 6 indexed citations

13.

Fukuoka, Takuya, et al.. (2013). Cilostazol Inhibits Platelet–Endothelial Cell Interaction in Murine Microvessels after Transient Bilateral Common Carotid Artery Occlusion. Journal of Stroke and Cerebrovascular Diseases. 23(5). 1056–1061. 6 indexed citations

14.

Osawa, Aiko, Shinichiro Maeshima, Hajime Maruyama, Hidetaka Takeda, & Norio Tanahashi. (2013). Late-Onset Dysphagia in a Sumo Wrestler after a Sumo Bout. Current Sports Medicine Reports. 12(1). 11–13. 2 indexed citations

15.

Deguchi, Ichiro, Takuya Fukuoka, Tomohisa Dembo, et al.. (2012). Relationship of Obesity to Recanalization after Hyperacute Recombinant Tissue-Plasminogen Activator Infusion Therapy in Patients with Middle Cerebral Artery Occlusion. Journal of Stroke and Cerebrovascular Diseases. 21(3). 161–164. 11 indexed citations

16.

Ogura, Jiro, Yusuke Terada, Takashi Tsujimoto, et al.. (2012). Intestinal Ischemia-Reperfusion Increases Efflux for Uric Acid Via Paracellular Route in the Intestine, but Decreases that Via Transcellular Route Mediated by BCRP. Journal of Pharmacy & Pharmaceutical Sciences. 15(2). 295–295. 13 indexed citations

17.

Maruyama, Hajime, Harumitsu Nagoya, Yuji Kato, et al.. (2012). Spontaneous cervicocephalic arterial dissection with headache and neck pain as the only symptom. The Journal of Headache and Pain. 13(3). 247–253. 42 indexed citations

18.

Uchino, Akira, Hajime Maruyama, Ichiro Deguchi, et al.. (2011). Magnetic Resonance Imaging Investigation of Secondary Degeneration of the Mesencephalic Substantia Nigra After Cerebral Infarction. Journal of Stroke and Cerebrovascular Diseases. 22(1). 58–65. 9 indexed citations

19.

Horiuchi, Yohsuke, Hajime Maruyama, Ichiro Deguchi, et al.. (2011). Clinical Review of 28 Patients with Basilar Artery Occlusion. Journal of Stroke and Cerebrovascular Diseases. 22(4). 358–363. 7 indexed citations

20.

Fukuoka, Takuya, Tomohisa Dembo, Ichiro Deguchi, et al.. (2011). Three Cases of Middle Cerebral Artery Occlusion Emergently Revascularized with A Balloon-expandable Coronary Bare Stent After Intravenous Tissue Plasminogen Activator. Journal of Stroke and Cerebrovascular Diseases. 21(8). 883–889. 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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