Technical - Emerging CMR Methods - Tissue Characterization-Bright-blood and dark-blood PSIR LGE and T1 and T2 maps in a single free-breathing scan improves visualization of subendocardial MI: An all-in-one approach

Bright-blood and dark-blood PSIR LGE and T1 and T2 maps in a single free-breathing scan improves visualization of subendocardial MI: An all-in-one approach

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Video Summary

The presentation introduces an all-in-one, free-breathing mSASHA method that simultaneously produces quantitative T1 and T2 maps and synthetic bright- and dark-blood PSIR late gadolinium enhancement. This addresses a key limitation of mapping, which is excellent for diffuse disease but less effective for focal scar such as subendocardial MI. Using multiple saturation-recovery and T2-prepared images, the method jointly fits T1 and T2, with motion correction and automatic deep-learning segmentation to generate LGE quickly in-line. In chronic MI patients, the synthetic LGE achieved contrast comparable to current separate bright/dark-blood protocols while reducing complexity and scan burden.

Keywords

mSASHA

quantitative T1 and T2 mapping

synthetic late gadolinium enhancement

myocardial infarction

motion correction