Robust self-navigated body MRI using dense coil arrays.

ABSTRACT:

Purpose

To develop a robust motion estimation method for free-breathing body MRI using dense coil arrays.

Methods

Self-navigating pulse sequences can measure subject motion without using external motion monitoring devices. With dense coil arrays, individual coil elements can provide localized motion estimates. An averaged motion estimate over all coils is often used for motion compensation. However, this motion estimate may not accurately represent the dominant motion within the imaging volume. In this work, a coil clustering method is proposed to automatically determine the dominant motion for dense coil arrays. The feasibility of the proposed method is investigated in free-breathing abdominal MRI and cardiac MRI, and compared with manual motion estimate selection for respi

SUBMITTER: Zhang T 

PROVIDER: S-EPMC4732937 | biostudies-literature | 2016 Jul

REPOSITORIES: biostudies-literature