Special Session 06: New Techniques Ready for Clinical Application (2018)-T1 and T2 mapping, 3D vs. 2D acquisition, validation, strengths and weaknesses

T1 and T2 mapping, 3D vs. 2D acquisition, validation, strengths and weaknesses

Video Transcription

Video Summary

The speaker reviewed myocardial T1 and T2 mapping techniques used to diagnose cardiac diseases, emphasizing that T1 and ECV help with chronic conditions while T2 is especially useful in acute edema-related disease. Most methods are 2D breath-hold approaches, though 3D and simultaneous T1/T2 techniques are emerging. Key T1 methods included MOLLI, ShMOLLI, and SASHA, highlighting tradeoffs between precision and accuracy. Newer block-equation and simulation-based methods aim to better account for sequence imperfections, slice profiles, heart-rate effects, and magnetization transfer. Multitasking was presented as a promising continuous acquisition approach using low-rank reconstruction. For T2 mapping, the talk covered standard T2-prepared SSFP and black-blood methods with improved fitting. Overall, the speaker stressed that clinical success depends on improving precision, accuracy, motion compensation, and artifact reduction, especially for multi-center studies and difficult device-related cases.

Keywords

myocardial T1 mapping

T2 mapping

ECV

MOLLI

multitasking