Invited Lecture Session 1: Standardization in Parametric Mapping (2019)-Image Acqusition and Reconstruction

Image Acqusition and Reconstruction

Video Transcription

Video Summary

The speaker explains the common framework for MRI parametric mapping: acquire multiple images with varying contrast, apply a physical signal model, and fit the model pixel-wise to estimate parameters like T1, T2, and T2*. They review major cardiac mapping methods: inversion recovery and MOLLI, saturation-based SASHA and hybrid SAFIRE for T1; T2-prepared imaging and gradient/spin echo methods for T2; and multi-echo GRE or single-shot GRE-EPI for T2*. Motion correction is emphasized as essential. Different techniques vary in accuracy, bias, and artifacts, so technique-specific normal ranges must be established.

Keywords

MRI parametric mapping

cardiac T1 mapping

T2 mapping

T2* mapping

motion correction