Abstract #0713
Effect of the Number of Echoes and Reconstruction model on the Precision and Reproducibility of T 2 Measurments in Myocardial T 2 Mapping
Tamer Basha 1 , Mehmet Akakaya 1 , Sbastien Roujol 1 , and Reza Nezafat 1
1
Department of Medicine, Beth Israel
Deaconess Medical Center & Harvard Medical School,
Boston, Massachusetts, United States
Quantitative myocardial T
2
mapping
allows non-invasive assessment of myocardial
inflammation/edema. Recent implementations use T
2
-prepared
(T
2
prep) SSFP sequences to acquire multiple T
2
weighted
images at different echo times, then generate the T
2
maps
based on a 2-parameter fitting (2P-fit) model of T
2
decay.
Recently, a 3-parameter fitting (3P-fit) model was found
superior to the conventional 2P-fit model, as it
compensates for T1 relaxation effect, and results in
more accurate T
2
measurements.
In this work, we sought to characterize the 3P-fit
approach in terms of precision and reproducibility and
to evaluate the influence of the number of employed T
2
prep
echo times on these two metrics.
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