Pilot tone-based prospective correction of respiratory motion for free-breathing myocardial T1 mapping.

ABSTRACT:

Objective

To provide respiratory motion correction for free-breathing myocardial T1 mapping using a pilot tone (PT) and a continuous golden-angle radial acquisition.

Materials and methods

During a 45 s prescan the PT is acquired together with a dynamic sagittal image covering multiple respiratory cycles. From these images, the respiratory heart motion in head-feet and anterior-posterior direction is estimated and two linear models are derived between the PT and heart motion. In the following scan through-plane motion is corrected prospectively with slice tracking based on the PT. In-plane motion is corrected for retrospectively. Our method was evaluated on a motion phantom and 11 healthy subjects.

Results

Non-motion corrected measurements using a moving phantom showed

SUBMITTER: Ludwig J 

PROVIDER: S-EPMC9992053 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature