Fig. 3
From: Robust free-breathing SASHA T1 mapping with high-contrast image registration
Overview of proposed analysis for free-breathing SASHA-HC. The displacement of the heart in free-breathing data is estimated using rigid image registration and used to select a subset of images for further analysis. This subset is aligned with a non-rigid image registration algorithm using both primary and difference images, and the resulting deformation fields are applied to the primary images. A T1 map is calculated from the aligned images using non-linear least squares curve fitting