Grants per year
Personal profile
Research Interests
As Assistant Professor in Research at the Department of Radiology of Northwestern University I am directing the 4D Lab. The 4D Lab is a new Radiology cardiovascular quantitative image analysis facility working on basic and advanced MRI data analysis to support research projects, multicenter studies or external collaboration partners. My personal research focus lies on the development and improvement of 4D Flow MRI sequences and image analysis methods especially for evaluating intracranial hemodynamics.
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
Education/Academic qualification
PhD, Computer Science, University of Freiburg
… → 2010
Research interests keywords
- Cardiovascular Diseases
- Cardiovascular Imaging
- Magnetic Resonance Imaging (MRI)
- Radiology
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Collaborations and top research areas from the last five years
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Non-invasive Evaluation of Intracranial Atherosclerotic Disease Using Hemodynamic Biomarkers
Markl, M. (PD/PI), Markl, M. (PD/PI), Markl, M. (PD/PI), Schnell, S. (PD/PI), Abdalla, R. (Co-Investigator), Abdalla, R. (Co-Investigator), Ansari, S. A. (Co-Investigator), Ansari, S. A. (Co-Investigator), Ansari, S. A. (Co-Investigator), Caprio, F. Z. (Co-Investigator), Caprio, F. Z. (Co-Investigator), Caprio, F. Z. (Co-Investigator), Hurley, M. C. (Co-Investigator), Hurley, M. C. (Co-Investigator), Hurley, M. C. (Co-Investigator), Ragin, A. (Co-Investigator), Ragin, A. (Co-Investigator), Ragin, A. (Co-Investigator), Russell, E. J. (Co-Investigator), Russell, E. J. (Co-Investigator), Russell, E. J. (Co-Investigator), Urday, S. (Co-Investigator), Urday, S. (Co-Investigator) & Urday, S. (Co-Investigator)
National Heart, Lung, and Blood Institute
9/1/20 → 8/31/25
Project: Research project
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Risk Assessment of Cerebral Aneurysm Growth with 4D flow MRI
Ansari, S. A. (PD/PI), Ansari, S. A. (PD/PI), Ansari, S. A. (PD/PI), Markl, M. (Co-PD/PI), Cantrell, D. R. (Co-Investigator), Cantrell, D. R. (Co-Investigator), Markl, M. (Co-Investigator), Markl, M. (Co-Investigator), Markl, M. (Co-Investigator), Schnell, S. (Co-Investigator), Schnell, S. (Co-Investigator) & Schnell, S. (Co-Investigator)
Purdue University, National Heart, Lung, and Blood Institute
8/6/20 → 7/31/25
Project: Research project
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Comprehensive Assessment of Hemodynamics in Intracranial Atherosclerotic Disease
Markl, M. (PD/PI), Ansari, S. A. (Other) & Schnell, S. (Other)
7/1/18 → 4/30/19
Project: Research project
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Multi-modality 4D Flow MRI data enhancement for quantification of cerebral aneurysms hemodynamics
Schnell, S. (PD/PI) & Markl, M. (Co-Investigator)
Purdue University, National Institute of Neurological Disorders and Stroke
6/15/18 → 5/31/21
Project: Research project
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Comprehensive Cardiac and Neurovascular 4D flow MRI for Improved Embolization Therapy in VGAM patients
Schnell, S. (PD/PI) & Shaibani, A. (Co-PD/PI)
American Heart Association Midwest Affiliate
7/1/16 → 6/30/20
Project: Research project
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Non-invasive quantification of pressure drops in stenotic intracranial vessels: Using deep learning-enhanced 4D flow MRI to characterize the regional haemodynamics of the pulsing brain
El Ahmar, A., Schnell, S., Ansari, S. A., Abdalla, R. N., Vali, A., Aristova, M., Markl, M., Winter, P. & Marlevi, D., Apr 4 2025, In: Interface Focus. 15, 1, 20240040.Research output: Contribution to journal › Article › peer-review
1 Scopus citations -
4D Flow MRI
Schmitter, S. & Schnell, S., Jan 1 2024, Quantification of Biophysical Parameters in Medical Imaging, Second Edition 2024. Springer Nature, p. 215-237 23 p.Research output: Chapter in Book/Report/Conference proceeding › Chapter
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Automated intracranial vessel segmentation of 4D flow MRI data in patients with atherosclerotic stenosis using a convolutional neural network
Winter, P., Berhane, H., Moore, J. E., Aristova, M., Reichl, T., Wollenberg, J., Richter, A., Jarvis, K. B., Patel, A., Caprio, F. Z., Abdalla, R. N., Ansari, S. A., Markl, M. & Schnell, S., 2024, In: Frontiers in Radiology. 4, 1385424.Research output: Contribution to journal › Article › peer-review
Open Access1 Scopus citations -
Cerebral Arterial Inflow and Venous Outflow Assessment Using 4D Flow MRI in Adult and Pediatric Patients
Abdalla, R. N., Schnell, S., Aristova, M., Alzein, M. M., Moazeni, Y., Aw, J., Wu, C., Markl, M., Cantrell, D. R., Hurley, M. C., Ansari, S. A. & Shaibani, A., Dec 2024, In: Journal of Vascular Diseases. 3, 4, p. 407-418 12 p.Research output: Contribution to journal › Article › peer-review
Open Access -
Generalized super-resolution 4D Flow MRI - using ensemble learning to extend across the cardiovascular system
Ericsson, L., Hjalmarsson, A., Akbar, M. U., Ferdian, E., Bonini, M., Hardy, B., Schollenberger, J., Aristova, M., Winter, P., Burris, N., Fyrdahl, A., Sigfridsson, A., Schnell, S., Figueroa, C. A., Nordsletten, D., Young, A. A. & Marlevi, D., 2024, (Accepted/In press) In: IEEE Journal of Biomedical and Health Informatics. 28, 12, p. 1-12 12 p.Research output: Contribution to journal › Article › peer-review
2 Scopus citations