Joanna Schaafsma, University of Toronto

Research

Read how they describe their research on their University of Toronto profile.

Latest papers

A dual-center validation of the PIRAMD scoring system for assessing the severity of ischemic Moyamoya disease.
Quantitative imaging in medicine and surgery · 2023
Endovascular Stroke Treatment and Risk of Intracranial Hemorrhage in Anticoagulated Patients.
Stroke · 2020

All 2 publications

Latest funding

Combination Antithrombotic Treatment for prevention of recurrent Ischemic Stroke in IntraCranial Atherosclerotic Stenosis (CATIS-ICAS)
CIHR · 2025 · Co-investigator
$1,828,350
The Direct Oral anticoagulants International Thrombolysis (DO-IT) trial
CIHR · 2025 · Co-investigator
$546,976
Liraglutide for patients receiving Endovascular Stroke Thrombectomy (LEAST)
CIHR · 2024 · Co-investigator
$851,063

All 7 grants and awards

2 publications.

01

A dual-center validation of the PIRAMD scoring system for assessing the severity of ischemic Moyamoya disease.

van Niftrik CHB, Sebök M, Nicholson P, Olijnyk L, Thurner P, Venkatraghavan L, Schaafsma J, Radovanovic I, Fisher JA, Krings T, Kulcsár Z, Tymianski M, Regli L, Mikulis DJ, Fierstra J

Quantitative imaging in medicine and surgery20235 citationsOpen Access

DOI: 10.21037/qims-22-1062 PMID: 37456328

02

Endovascular Stroke Treatment and Risk of Intracranial Hemorrhage in Anticoagulated Patients.

Meinel TR, Kniepert JU, Seiffge DJ, Gralla J, Jung S, Auer E, Frey S, Goeldlin M, Mordasini P, Mosimann PJ, Nogueira RG, Haussen DC, Rodrigues GM, Uphaus T, L'Allinec V, Krajíčková D, Alonso A, Costalat V, Hajdu SD, Olivé-Gadea M, Maegerlein C, Pierot L, Schaafsma J, Suzuki K, Arnold M, Heldner MR, Fischer U, Kaesmacher J

Stroke2020

DOI: 10.1161/strokeaha.119.026606 PMID: 31992179

Combination Antithrombotic Treatment for prevention of recurrent Ischemic Stroke in IntraCranial Atherosclerotic Stenosis (CATIS-ICAS)

Co-investigatorCIHR2025Project Grant

Principal investigators: Perera, Kanjana S; Katsanos, Aristeidis; Sharma, Mukul M

Keywords: Intracranial Atherosclerotic Disease; Prevention; Stroke

$1,828,350

The Direct Oral anticoagulants International Thrombolysis (DO-IT) trial

Co-investigatorCIHR2025Project Grant

Principal investigators: Catanese, Luciana; Katsanos, Aristeidis; Shoamanesh, Ashkan

Keywords: Acute Ischemic Stroke; Atrial Fibrillation; Direct Oral Anticoagulants; Intracranial Hemorrhage; Randomized Controlled Trials; Thrombolysis

$546,976

Liraglutide for patients receiving Endovascular Stroke Thrombectomy (LEAST)

Co-investigatorCIHR2024Project Grant

Principal investigators: Katsanos, Aristeidis; Sharma, Mukul M; Shoamanesh, Ashkan

Keywords: Clinical Trial; Endovascular Thrombectomy; Functional Outcomes; Glp-1 Receptor Agonists; Ischemic Stroke; Large Vessel Occlusion; Liraglutide; Major Adverse Cardiovascular Events; Neuroprotection; Vanguard Trial

$851,063

Comparison of Anti-coagulation and anti-Platelet Therapies for Intracranial Vascular Atherostenosis (CAPTIVA)

Co-investigatorCIHR2024Project Grant

Principal investigators: Perera, Kanjana S; Chimowitz, Marc; Hoh, Brian

Keywords: Captiva; Compass Regime; Icas; Intracranial Stenosis; Ischemic Stroke; Prevention

$248,624

International Care Bundle Evaluation in Cerebral Hemorrhage (I-CATCHER)

Co-investigatorCIHR2024Project Grant

Principal investigators: Dowlatshahi, Dariush; Anderson, Craig S; Demchuk, Andrew M; Ferguson, Emma; Shamy, Michel C

Keywords: Cluster Randomized Trial; Implementation Trial; Intracerebral Hemorrhage; Pragmatic Trial

$1,300,500

Antiplatelet Secondary Prevention International Randomised trial after INtracerebral haemorrhaGe (ASPIRING): a pragmatic, randomised, parallel group, open, phase 3, international superiority trial

Co-investigatorCIHR2022Project Grant

Principal investigators: Shoamanesh, Ashkan; Salman, Rustam A

Keywords: Antiplatelet Treatment; Antithrombotic Treatment; Hemorrhagic Stroke; Intracerebral Hemorrhage; Major Cardiovascular Events; Randomized Trial; Stroke

$967,724

Colchicine for the prevention of vascular events after an acute intracerebral hemorrhage (CoVasc-ICH)

Co-investigatorCIHR2021Project Grant

Principal investigators: Katsanos, Aristeidis; Shoamanesh, Ashkan

Keywords: Cerebrovascular Sciences (Including Stroke); Neuroinflammation

$339,890

From public funding decisions: CIHR since 2008, NSERC since 1991 and SSHRC since 1998 with their latest competition results, the Canada Foundation for Innovation, Genome Canada, the Canadian Space Agency, Canada Research Chairs, the Fonds de recherche du Québec, Ontario research funding, Michael Smith Health Research BC, the Canadian Cancer Society, Heart & Stroke, Brain Canada and the New Frontiers in Research Fund.

Frequent collaborators

Department of Surgery
Department of Anesthesiology and Pain Medicine
Department of Medicine
Department of Medical Imaging

Co-authors at University of Toronto, colored by department. Thicker lines mean more shared papers; select anyone to open their profile and their own map.

Timo Krings

Department of Surgery

1 shared papers, latest 2023

Lakshmikumar Raghavan

Department of Anesthesiology and Pain Medicine

1 shared papers, latest 2023

David Mikulis

Department of Medical Imaging

1 shared papers, latest 2023

Ivan Radovanovic

Department of Surgery

1 shared papers, latest 2023

Michael Tymianski

Department of Surgery

1 shared papers, latest 2023

Joseph Fisher

Department of Anesthesiology and Pain Medicine

1 shared papers, latest 2023

Lakshmikumar Venkat Raghavan

Department of Anesthesiology and Pain Medicine

1 shared papers, latest 2023

Write to this professor

A short, specific email works best. This draft uses one of their recent papers; replace the parts in brackets with your own details before sending.

Applying for

Paper to mention

Subject: Prospective PhD student Dear Professor Schaafsma, My name is [your name], and I am a [your current degree or role] at [your institution]. I am applying for a PhD position starting in [term and year]. I read your paper "A dual-center validation of the PIRAMD scoring system for assessing the severity of ischemic Moyamoya disease." (2023), and it connects closely to my own work on [your research topic]. [One or two sentences on what you did and what you learned.] Are you accepting new PhD students for [term and year]? I have attached my CV and transcripts, and I would be glad to talk at a time that suits you. Thank you for your time. Kind regards, [your name]