Bunched Phase Encoding in Projection Reconstruction
Sunshine J, Griswold M, Moriguchi H, Duerk J
University Hospitals of Cleveland / Case Western Reserve University
Projection reconstruction (PR) acquisitions have several advantages over rectilinear acquisitions. However, streaking artifacts remain and thus degrade image quality when the number of projections is significantly reduced. Bunched Phase Encoding (BPE) has recently been proposed as a new fast data acquisition method in rectilinear sampling in MRI. In BPE, the total number of TR cycles and hence the scan time can be reduced. In this study, rectilinear BPE have been extended to PR to reduce the number of projections. The newly proposed PR-BPE acquisition represents a very useful method to reduce acquisition time in PR MRI while maintaining image quality.