Improved generalized series reconstruction for 3D MRI using shaped data
Saranathan M, Neelam S
Indian Institute of Science
The work proposes reconstructing partial k-space DCE-MRI using the TRIGR algorithm on a star-shaped (SS) data truncation window. The SS mask contains more energy than the standard rectangular mask (RS), since all points along SS lie close to the ky-kz axes. Two methods of TRIGR extrapolation on SS data were examined and compared to conventional rectangularly truncated (RS) TRIGR data. Analysis on phantom and DCEMRI data sets from patients with cancer reveal SS-TRIGR to be significantly more accurate than RS-TRIGR using just 15% of k-space for small structures.