Patient specific prospective respiratory motion correction for efficient, free-breathing cardiovascular MRI.

ABSTRACT:

Purpose

To develop a patient-specific respiratory motion correction technique with true 100% acquisition efficiency.

Methods

A short training scan consisting of a series of single heartbeat images, each acquired with a preceding diaphragmatic navigator, was performed to fit a model relating the patient-specific 3D respiratory motion of the heart-to-diaphragm position. The resulting motion model was then used to update the imaging plane in real-time to correct for translational motion based on respiratory position provided by the navigator. The method was tested in a group of 11 volunteers with 5 separate free-breathing acquisitions: FB, no motion correction; FB-TF, free breathing with a linear tracking factor; Nav Gate, navigator gating; Nav Gate-TF, navigator gating with a

SUBMITTER: Bush MA 

PROVIDER: S-EPMC6814292 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature