Technologist Track Session 2: CMR Myocardial Delayed Enhancement (2019)-Gray Blood Delayed Enhancement

Video Transcription

Video Summary

The talk explains how to improve late gadolinium enhancement MRI by suppressing blood signal to better distinguish scar from blood. Conventional bright-blood LGE can make scar and blood look similar. Gray-blood techniques, adapted from phase-sensitive inversion recovery or using T1-T2 preparation pulses, aim to null or partially suppress blood while preserving scar visibility. The speaker reviews several sequence designs, timing strategies, and optimization methods, including model-based parameter selection. Results in patients and swine show improved scar-to-blood contrast, though limitations remain when tissue T1 values are similar. Further research is needed to refine prediction and optimization of contrast.

Keywords

late gadolinium enhancement MRI

blood signal suppression

scar-to-blood contrast

gray-blood imaging

phase-sensitive inversion recovery