Philip James Beatty1, James H. Holmes2,
Scott B. Reeder3, Jean H. Brittain2
1Global Applied Science Laboratory,
GE Healthcare, Thornhill, Ontario, Canada; 2Global Applied Science
Laboratory, GE Healthcare, Madison, WI, United States; 3Departments
of Radiology & Medical Physics, University of Wisconsin - Madison,
Madison, WI, United States
Combining parallel imaging with reduced field-of-view acquisitions is challenging since such acquisitions violate underlying assumptions of many parallel imaging reconstruction methods. Direct Virtual Coil (DVC) parallel imaging is a data-driven technique that delivers similar image quality to coil-by-coil approaches, such as GRAPPA, while reducing memory and compute requirements by over 10X for high channel count coil arrays. This work compares images reconstructed with DVC channel combination and sum-of-squares (SoS) channel combination, revealing subtle differences within the wrapped region.