Evaluating different methods of MR-based motion correction in simultaneous PET/MR using a head phantom moved by a robotic system.

ABSTRACT:

Background

Due to comparatively long measurement times in simultaneous positron emission tomography and magnetic resonance (PET/MR) imaging, patient movement during the measurement can be challenging. This leads to artifacts which have a negative impact on the visual assessment and quantitative validity of the image data and, in the worst case, can lead to misinterpretations. Simultaneous PET/MR systems allow the MR-based registration of movements and enable correction of the PET data. To assess the effectiveness of motion correction methods, it is necessary to carry out measurements on phantoms that are moved in a reproducible way. This study explores the possibility of using such a phantom-based setup to evaluate motion correction strategies in PET/MR of the human head.

Method

SUBMITTER: Einspanner E 

PROVIDER: S-EPMC8894542 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature