An Enhanced Phase Correction Algorithm for PROPELLER DW MRI
Devaraj A, Pipe J, Robison R
St. Joseph's Hospital
Good PROPELLER reconstruction is closely related to accurate alignment of the blades with the k-space origin. Superfluous phase can distort this alignment, limiting the reconstruction quality. The existing technique for linear phase correction is sub-optimal - it may result in discarding large data strips from the blade edges. Here we present an improved technique - in lieu of elimination, the artifact is accurately quantified and retained. This information is then used in the reconstruction process to inherently compensate for the artifact. We demonstrate the effectiveness of this approach to track linear phase distortion and the possible improvement in reconstruction.