Abstract #4363

Fast Susceptibility Weighted Imaging (SWI) using Readout-Segmented (RS)-EPI

Samantha J. Holdsworth¹, Rafael O'Halloran¹, Stefan Skare², Roland Bammer¹

¹Department of Radiology, Stanford University, Palo Alto, CA, United States; ²Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden

The most commonly used SWI acquisition uses a 3D gradient echo (GRE) sequence, however due to the inefficient coverage of k-space per TR, 3D GRE suffers from a long scan time and even subtle motion can considerably hamper the quality of final SWI image. 3D SAP-EPI has been used as a much faster and motion-robust technique than 3D GRE for SWI. Here, we implement Readout-Segmented (RS)-EPI as an alternative. Due to the unidirectional distortions and reduction of blurring compared to 3D SAP-EPI, we show that 3D RS-EPI is a promising technique for the acquisition of fast SWI images.