PROPELLER and Turboprop Acquisition Parameters for Optimal Motion Correction
Arfanakis K, Pipe J, Tamhane A
Illinois Institute of Technology
PROPELLER-MRI and Turboprop-MRI are considerably less sensitive to motion than their precursors, multi-shot fast spin echo (FSE) and gradient & spin-echo (GRASE) respectively. In the PROPELLER family of sequences, data are collected along blades centered at the origin of k-space. The amount of translation and rotation of the object is estimated for each blade through comparison of the common low spatial frequency information between blades, and subsequently corrected. In this study, the effects of PROPELLER and Turboprop acquisition parameters on motion correction were investigated. Acquisition parameters that ensure optimal motion correction were proposed.