Black blood myocardial T₂ mapping.

ABSTRACT:

Purpose

To develop a black blood heart-rate adaptive T₂ -prepared balanced steady-state free-precession (BEATS) sequence for myocardial T₂ mapping.

Methods

In BEATS, blood suppression is achieved by using a combination of preexcitation and double inversion recovery pulses. The timing and flip angles of the preexcitation pulse are auto-calculated in each patient based on heart rate. Numerical simulations, phantom studies, and in vivo studies were conducted to evaluate the performance of BEATS. BEATS T₂ maps were acquired in 36 patients referred for clinical cardiac MRI and in 1 swine with recent myocardial infarction. Two readers assessed all images acquired in patients to identify the presence of artifacts associated with slow blood flow.

SUBMITTER: Wang C 

PROVIDER: S-EPMC6294305 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature