Technologist Track Session 2: CMR Myocardial Delayed Enhancement (2019)-MT pulse Dark Blood Delayed Enhancement

Video Transcription

Video Summary

The speaker discusses delayed enhancement MRI for detecting subendocardial myocardial infarction, noting that while troponins are more sensitive in acute MI, MRI provides a long-lasting record of myocardial injury. Conventional delayed enhancement can miss small infarcts because of poor blood-myocardium contrast, not spatial resolution. A newer method, FIDDLE (Flow Independent Dark Blood Delayed Enhancement Imaging), suppresses blood signal and improves infarct visibility. Validation in canine pathology and patient examples showed better infarct detection and localization than conventional imaging. The talk also covers technical choices like preparation pulses, inversion time, and the advantages of black-blood over gray-blood imaging.

Keywords

delayed enhancement MRI

subendocardial myocardial infarction

FIDDLE imaging

black-blood imaging

myocardial injury detection