Towards retrospective motion correction and reconstruction for clinical 3D brain MRI protocols with a reference contrast.

ABSTRACT:

Object

In a typical MR session, several contrasts are acquired. Due to the sequential nature of the data acquisition process, the patient may experience some discomfort at some point during the session, and start moving. Hence, it is quite common to have MR sessions where some contrasts are well-resolved, while other contrasts exhibit motion artifacts. Instead of repeating the scans that are corrupted by motion, we introduce a reference-guided retrospective motion correction scheme that takes advantage of the motion-free scans, based on a generalized rigid registration routine.

Materials and methods

We focus on various existing clinical 3D brain protocols at 1.5 Tesla MRI based on Cartesian sampling. Controlled experiments with three healthy volunteers and three levels of mo

SUBMITTER: Rizzuti G 

PROVIDER: S-EPMC11452448 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature