Robust universal nonrigid motion correction framework for first-pass cardiac MR perfusion imaging.

ABSTRACT:

Purpose

To present and assess an automatic nonrigid image registration framework that compensates motion in cardiac magnetic resonance imaging (MRI) perfusion series and auxiliary images acquired under a wide range of conditions to facilitate myocardial perfusion quantification.

Materials and methods

Our framework combines discrete feature matching for large displacement estimation with a dense variational optical flow formulation in a multithreaded architecture. This framework was evaluated on 291 clinical subjects to register 1.5T and 3.0T steady-state free-precession (FISP) and fast low-angle shot (FLASH) dynamic contrast myocardial perfusion images, arterial input function (AIF) images, and proton density (PD)-weighted images acquired under breath-hold (BH) and free-brea

SUBMITTER: Benovoy M 

PROVIDER: S-EPMC5557713 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature