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Masatoshi Koga · SciRah

Researcher profile · Semantic Scholar

Masatoshi Koga

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Masatoshi Koga — researcher profile on SciRah

h-index: 12
Works: 91
Citations: 742

Most-cited papers

Effect of treatment delay, age, and stroke severity on the effects of intravenous thrombolysis with alteplase for acute ischaemic stroke: a meta-analysis of individual patient data from randomised trials
J. Emberson, K. Lees, P. Lyden, L. Blackwell +26 more
2014The Lancet370 citations Open access
Semantic Scholar
Collaboration on the optimal timing of anticoagulation after ischaemic stroke and atrial fibrillation: a systematic review and prospective individual participant data meta-analysis of randomised controlled trials (CATALYST).
H. Dehbi, Urs Fischer, S. Åsberg, T. Milling +27 more
2025The Lancet35 citations Open access
Semantic Scholar
Early vs Late Anticoagulation in Minor, Moderate, and Major Ischemic Stroke With Atrial Fibrillation: Post Hoc Analysis of the ELAN Randomized Clinical Trial.
M. Goeldlin, A. Hakim, M. Branca, S. Abend +25 more
2024JAMA Neurology34 citations Open access
Semantic Scholar
Left Atrial Appendage Occlusion vs Standard of Care After Ischemic Stroke Despite Anticoagulation.
M. Maarse, D. Seiffge, D. Werring, L. Boersma +52 more
2024JAMA Neurology31 citations Open access
Semantic Scholar
Clinical impact of body mass index on outcomes of ischemic and hemorrhagic strokes
Kaori Miwa, M. Nakai, S. Yoshimura, Y. Sasahara +10 more
2024International Journal of Stroke29 citations Open access
Semantic Scholar
Call to Action: SARS-CoV-2 and CerebrovAscular DisordErs (CASCADE)
S. Abootalebi, Benjamin M. Aertker, Mohammadsobhan S. Andalibi, N. Asdaghi +67 more
2020Journal of Stroke & Cerebrovascular Diseases25 citations Open access
Semantic Scholar
Optimal Antithrombotics for Ischemic Stroke and Concurrent Atrial Fibrillation and Atherosclerosis: A Randomized Clinical Trial.
S. Okazaki, Kanta Tanaka, Y. Yazawa, R. Doijiri +20 more
2025JAMA Neurology22 citations Open access
Semantic Scholar
Early Versus Late Initiation of Direct Oral Anticoagulants After Ischemic Stroke in People With Atrial Fibrillation and Hemorrhagic Transformation: Prespecified Subanalysis of the Randomized Controlled ELAN Trial
R. Rohner, M. Kneihsl, M. Goeldlin, A. Hakim +26 more
2024Circulation22 citations Open access
Semantic Scholar
Pro‐Hemorrhagic Cerebral Autosomal Dominant Arteriopathy with Subcortical Infarcts and Leukoencephalopathy Associated with NOTCH3 p.R75P Mutation with Low Vascular NOTCH3 Aggregation Property
H. Ishiyama, Hyunjin Kim, S. Saito, S. Takeda +21 more
2024Annals of Neurology17 citations Open access
Semantic Scholar
Sex Differences in Frequency, Severity, and Distribution of Cerebral Microbleeds
S. Fandler-Höfler, Sebastian Eppinger, Gareth Ambler, Philip S. Nash +111 more
2024JAMA Network Open15 citations Open access
Semantic Scholar
Atrial Fibrillation Detection and Ischemic Stroke Recurrence in Cryptogenic Stroke: A Retrospective, Multicenter, Observational Study
Kenichi Todo, S. Okazaki, R. Doijiri, Hidekazu Yamazaki +15 more
2024Journal of the American Heart Association : Cardiovascular and Cerebrovascular Disease12 citations Open access
Semantic Scholar
ESOC 2023 – Late Breaking Abstracts
Urs Fischer, Masatoshi Koga, D. Strbian, M. Branca +65 more
2023European Stroke Journal12 citations Open access
Semantic Scholar
Higher Frequency of Premature Atrial Contractions Correlates With Atrial Fibrillation Detection after Cryptogenic Stroke
Yuki Shimada, Kenichi Todo, R. Doijiri, Hidekazu Yamazaki +16 more
2024Stroke10 citations Open access
Semantic Scholar
Statin Therapy for Secondary Prevention in Ischemic Stroke Patients With Cerebral Microbleeds.
L. Prats-Sánchez, P. Camps-Renom, Philip S. Nash, D. Wilson +51 more
2024Neurology9 citations Open access
Semantic Scholar
Increased risk of recurrent stroke in patients with impaired kidney function: results of a pooled analysis of individual patient data from the MICON international collaboration
J. Molad, Kaori Miwa, Philip S. Nash, Gareth Ambler +84 more
2025Journal of Neurology Neurosurgery & Psychiatry8 citations Open access
Semantic Scholar
Net Benefit of Early Anticoagulation for Stroke With Atrial Fibrillation
A. Polymeris, M. Branca, P. Sylaja, E. Sandset +22 more
2025JAMA Network Open6 citations Open access
Semantic Scholar
Stroke severity and outcomes in patients with intracerebral hemorrhage on anticoagulants and antiplatelet agents: An analysis from the Japan Stroke Data Bank
Yoshito Arakaki, S. Yoshimura, K. Toyoda, Kazutaka Sonoda +12 more
2024International Journal of Stroke6 citations
Semantic Scholar
Thrombolysis for wake-up stroke versus non-wake-up unwitnessed stroke: EOS individual patient data meta-analysis
Naruhiko Kamogawa, Kaori Miwa, K. Toyoda, Märit Jensen +16 more
2024Stroke6 citations Open access
Semantic Scholar
Evidence and Recommendations for Acute Stroke Rehabilitation from the Japan Stroke Society: Abridged Secondary Publication of the Japanese-language Version
Wataru Kakuda, Makoto Nakajima, Koichi Oki, Tetsuo Koyama +14 more
2024Progress in Rehabilitation Medicine6 citations Open access
Semantic Scholar
Blood pressure management in stroke: comparative review of the 2025 AHA/ACC/AANP/ACPM/AGS/AMA/ASPC/NMA/PCNA/SGIM, 2024 ESC, 2023 ESH, and 2025 JSH guidelines
Masatoshi Koga
2026Hypertension Research5 citations Open access
Semantic Scholar
Safety and outcomes of intravenous thrombolysis in acute ischemic stroke with intracranial artery dissection
Shuhei Egashira, S. Kunisawa, Masatoshi Koga, Masafumi Ihara +5 more
2025International Journal of Stroke5 citations
Semantic Scholar
Multicenter Prospective Randomized Study Comparing the Incidence of Periprocedural Cerebral Embolisms Caused by Catheter Ablation of Atrial Fibrillation Between Cryoballoon and Radiofrequency Ablation (Embo-Abl Study).
K. Miyamoto, K. Kanaoka, Y. Ohta, Masue Yoh +20 more
2024Circulation: Arrhythmia and Electrophysiology5 citations
Semantic Scholar
Catheter Ablation and Oral Anticoagulation for Secondary Stroke Prevention in Atrial Fibrillation
Kazumi Kimura, Yasuhiro Nishiyama, Y. Iwasaki, W. Shimizu +27 more
2026JAMA Neurology4 citations Open access
Semantic Scholar
Tenecteplase in Acute Ischemic Stroke: A Scientific Statement From the Korean Stroke Society
Hyunsoo Kim, Joon-Tae Kim, B. Kim, Dae-Hyun Kim +8 more
2025Journal of Clinical Neurology4 citations Open access
Semantic Scholar
Antiplatelet Use Prior to Anticoagulant Initiation in Patients With Atrial Fibrillation-Related Ischemic Stroke: An ELAN Trial Analysis
A. Polymeris, Masatoshi Koga, D. Strbian, Adhiyaman Vedamurthy +21 more
2025Journal of Stroke4 citations Open access
Semantic Scholar
Clinical Characteristics, Risk Factors, and Outcomes of Arterial Dissection-Associated Stroke: A 22-Year Cohort Study from the Japan Stroke Data Bank
Kenichi Kashihara, Michikazu Nakai, Masatoshi Koga, Akira Handa +4 more
2025Journal of atherosclerosis and thrombosis4 citations Open access
Semantic Scholar
A nationwide survey for the provision of acute stroke rehabilitation in Japan: initial dose and weekend/holiday rehabilitation.
Makoto Nakajima, Koichi Oki, Tomohiro Omori, Tetsuo Koyama +9 more
2023Journal of Stroke & Cerebrovascular Diseases4 citations Open access
Semantic Scholar
P2Y12 Reaction Units With Prasugrel in Acute Large Artery Atherosclerosis and Transient Ischemic Attack: An Open-Label Randomized Controlled Study, ACUTE-PRAS.
Shigeru Fujimoto, Yasuyuki Iguchi, H. Yamagami, Masatoshi Koga +18 more
2025Circulation Journal3 citations Open access
Semantic Scholar
Direct oral anticoagulants versus warfarin for the management of left atrial appendage thrombus in patients with acute stroke.
T. Nishimura, Junya Aoki, Y. Sakamoto, M. Shiozawa +11 more
2025Journal of Neurological Sciences3 citations Open access
Semantic Scholar
Early Antithrombotic Therapy in Acute Ischemic Stroke
Masatoshi Koga
2024Journal of Neuroendovascular Therapy3 citations Open access
Semantic Scholar
Clinical characteristics of stroke in SARS-CoV-2 infected patients in Japan: A prospective nationwide study.
Yasuhiro Nishiyama, Susumu Miyamoto, M. Sakaguchi, N. Sakai +9 more
2024Journal of Neurological Sciences3 citations Open access
Semantic Scholar
Seven-Day Holter Monitoring Substantially Improves Detection of Low-Burden Atrial Fibrillation - Results From a Large Japanese Multicenter Cohort.
Y. Inoue, Kota Nakatsuji, K. Kumagai, Tadashi Hoshiyama +7 more
2026Circulation Journal2 citations Open access
Semantic Scholar
JCS 2026 Guideline on the Management of Infective Endocarditis.
Chisato Izumi, Masao Daimon, S. Kaji, A. Masumoto +33 more
2026Circulation Journal2 citations Open access
Semantic Scholar
Impact of Stroke Severity and Vascular Risk Factors on Early Versus Late Anticoagulation in Patients With Stroke and Atrial Fibrillation
Masatoshi Koga, M. Branca, D. Strbian, T. Yoshimoto +27 more
2025Journal of Stroke2 citations Open access
Semantic Scholar
Effects of sex on imaging-based intravenous thrombolysis for ischaemic stroke with unknown onset time: a pooled analysis of clinical trials
Mayumi Fukuda‐Doi, Masatoshi Koga, G. Thomalla, Märit Jensen +13 more
2025European Stroke Journal2 citations Open access
Semantic Scholar
Investigation of thrombectomy technique for M2 occlusion based on the M1-M2 bifurcation angle.
K. Shimonaga, Hirotoshi Imamura, Junichiro Ochiai, Akihiro Niwa +11 more
2025Interventional Neuroradiology2 citations Open access
Semantic Scholar
DWI-Positive Lesions in Acute Intracerebral Hemorrhage and Their Correlation With Small Vessel Disease
Satoshi Hosoki, Tomotaka Tanaka, Y. Kawamura, S. Bhaskar +9 more
2025Neurology2 citations Open access
Semantic Scholar
Atherogenic Dyslipidemia Is Critically Related to Aortic Complicated Lesions in Cryptogenic Stroke
Muneaki Kikuno, Yuji Ueno, Y. Tateishi, Ayako Kuriki +16 more
2024Journal of atherosclerosis and thrombosis2 citations
Semantic Scholar
Neurological prognosis stratified by computed tomography perfusion in patients with cerebral malperfusion secondary to acute type A aortic dissection
Yosuke Inoue, M. Inoue, Masatoshi Koga, Kazufumi Yoshida +4 more
2026General Thoracic and Cardiovascular Surgery1 citations
Semantic Scholar
Impact of Basal Ganglia Perivascular Spaces on Ischemic and Hemorrhagic Risks in Patients Taking Antithrombotic Therapies
Soya Iwamoto, Kaori Miwa, Masatoshi Koga, Sohei Yoshimura +13 more
2026Neurology1 citations Open access
Semantic Scholar
Standard-Dose Tenecteplase vs Low-Dose Alteplase for Acute Ischemic Stroke From Large-Vessel Occlusion
M. Inoue, Teruyuki Hirano, Mayumi Fukuda‐Doi, Hiroyuki Kawano +30 more
2026JAMA Neurology1 citations Open access
Semantic Scholar
P2Y12 Inhibitor Response By Patient Background Factors: An ExploratoryPost Hoc Subgroup Analysis of the ACUTE-PRAS Study
Shigeru Fujimoto, Yasuyuki Iguchi, H. Yamagami, Masatoshi Koga +18 more
2026Journal of atherosclerosis and thrombosis1 citations Open access
Semantic Scholar
Andexanet Alfa for Life-Threatening Bleeding Following Factor Xa Inhibitor Treatment
Kei Sakamoto, M. Ishihara, H. Kato, Hyosung Kim +4 more
2026JACC: Asia1 citations Open access
Semantic Scholar
Ischemic and Bleeding Events After Early Initiation of Direct Oral Anticoagulants for Acute Intracranial Hemorrhage With Non-Valvular Atrial Fibrillation - A Multicenter Prospective Registry.
Masatoshi Koga, K. Toyoda, Yasuyuki Iguchi, R. Itabashi +40 more
2026Circulation Journal1 citations Open access
Semantic Scholar
Endovascular Therapy for Acute Ischemic Stroke Beyond 24 Hours After Onset: A Nationwide Registry-Based Analysis
R. Inui, Kanta Tanaka, K. Toyoda, Sohei Yoshimura +10 more
2026Stroke1 citations Open access
Semantic Scholar
Impact of Intracranial Atherosclerosis and Cerebral Small Vessel Disease on Overt Vascular Events During Antithrombotic Therapy
Kaori Miwa, Masatoshi Koga, Kanta Tanaka, Y. Yakushiji +14 more
2026European Journal of Neurology1 citations Open access
Semantic Scholar
Once- versus twice-daily direct oral anticoagulants after ischemic stroke in atrial fibrillation – A post-hoc analysis of the ELAN trial
A. Polymeris, Jean-Benoît Rossel, Masatoshi Koga, D. Strbian +23 more
2026European Stroke Journal1 citations Open access
Semantic Scholar
Efficacy and safety of intravenous alteplase for unknown onset stroke on prior antiplatelet therapy: Post hoc analysis of the EOS individual participant data
Y. Shiomi, Kaori Miwa, Märit Jensen, M. Inoue +14 more
2025International Journal of Stroke1 citations Open access
Semantic Scholar
Characteristics and outcomes in patients with in-hospital stroke: Japan stroke data bank
Kotaro Usui, S. Yoshimura, Shinichi Wada, K. Toyoda +13 more
2025International Journal of Stroke1 citations
Semantic Scholar
STAY-HOME: Endovascular Thrombectomy for Patients With Prestroke Disability
Jason Vuong, Thanh G Phan, Bernard Yan, Peter J. Mitchell +6 more
2025Stroke1 citations
Semantic Scholar

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