Landmark-based evaluation of a deformable motion correction for DCE-MRI of the liver.

ABSTRACT:

Purpose

Annotation of meaningful landmark ground truth on DCE-MRI is difficult and laborious. Motion correction methods applied to DCE-MRI of the liver are thus mostly evaluated using qualitative or indirect measures. We propose a novel landmark annotation scheme that facilitates the generation of landmark ground truth on larger clinical datasets.

Methods

In our annotation scheme, landmarks are equally distributed over all time points of all available dataset cases and annotated by multiple observers on a per-pair basis. The scheme is used to annotate 26 DCE-MRI of the liver. A subset of the ground truth is used to optimize parameters of a deformable motion correction. Several variants of the motion correction are evaluated on the remaining cases with respect to distances of

SUBMITTER: Strehlow J 

PROVIDER: S-EPMC5880871 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature