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Abstract #3656

Comparison of quantitative susceptibility mapping methods for evaluating cerebral microbleeds at 3T and 7T

Yicheng Chen1, Clare B Poynton2, Suchandrima Banerjee3, and Janine M Lupo2

1UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, Bekeley and University of California, San Francisco, San Francisco, CA, United States, 2Department of Radiology, University of California, San Francisco, 3Global Applied Science Laboratory, GE Healthcare

There is a growing interest in using QSM to detect and quantitatively evaluate cerebral microbleeds (CMBs). We compared several algorithms proposed in recent years for QSM on patients with CMBs after radiation therapy at 3T and 7T by quantitatively analyzing the noise and contrast of the susceptibility maps. Although RESHARP+ iLSQR had the least noise among methods, CMB and vessel contrast were more affected by incomplete background field removal, especially at 7T.

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