Multi-Echo GRASP for Cardiac T2*-Relaxometry
Thomas Lottner1, Joannes Fischer1, Simon Reiss1, Lars Bielak1, Timo Heidt2, Ali Caglar Özen1,3, Julien Thielmann2, Constantin von zur Mühlen2, and Michael Bock1
1Department of Radiology, Medical Physics, Faculty of Medicine, University Medical Center Freiburg, University of Freiburg, Freiburg, Germany, 2University Heart Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany, 3German Consortium for Translational Cancer Research Partner Site Freiburg, German Cancer Research Center (DKFZ), Heidelberg, Germany
T2* mapping can be a useful
tool in therapy planning for iron accumulation in the heart, Multi-echo-GRASP offers a method of T2* mapping for all
phases of the cardiac cycle without the need for a breath hold which is beneficial for patients
with an impaired cardiac and/or respiratory capacity.
Human
Multiecho-GRASP magnitude images and T2* maps for 20 cardiac cycles. T2* values with low magnitude data (< 5% of mean signal intensity) was omitted.
Reference
multi-echo gradient echo acquisition compared to multiecho GRASP (5th
echo not shown). The T2* map shows the color-coded values in the myocardium
together with a bullseye plot of the mean T2* values in each segment.