Abstract #1877

QSM in stroke: Veins, Tissue and Cerebral Microbleeds

Parisa Badihi Najafabadi¹, Ana Klahr², Hongfu Sun¹, Ahmed Elkady¹, Derek J Emery³, Kenneth S Butcher², and Alan H Wilman¹

¹Biomedical Engineering, University of Alberta, Edmonton, AB, Canada, ²Medicine, University of Alberta, Edmonton, AB, Canada, ³Radiology & Diagnostic Imaging, University of Alberta, Edmonton, AB, Canada

We assessed microbleed burden and cerebral oxygenation in veins and tissue in stroke patients by means of Quantitative Susceptibility Mapping (QSM). Results showed significant susceptibility difference for ipsi- and contralateral veins, and smaller area measurements for cerebral microbleeds compared to SWI and magnitude images due to elimination of blooming effects. Strong susceptibility difference of microbleeds compared to other brain tissue suggest the possibility of quantifying microbleeds by thresholding the images. QSM may be employed in stroke studies to study cerebral oxygenation in veins and microbleed assessment.

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