Abstract #0179
SAR optimised local B 1 + shimming for cardiac imaging at 3T a multi-model study
Arian Beqiri 1 , Francesco Padormo 1,2 , Jeff W. Hand 1 , Joseph V. Hajnal 1,2 , and Shaihan J. Malik 1
1
Division of Imaging Sciences and Biomedical
Engineering, King's College London, London, United
Kingdom,
2
Centre
for the Developing Brain, King's College London, London,
United Kingdom
Cardiac imaging at high field suffers from image quality
issues due to greater B
1
+
inhomogeneities
and is frequently limited by SAR, which constrains the
speed at which scans can be run without exceeding
regulatory limits. By using parallel transmission MRI,
we demonstrate the ability to significantly reduce SAR
whilst simultaneously improving B
1
+
homogeneity
in order to optimise imaging over the cardiac region for
two differently sized subjects. We also show the effects
of selecting the wrong SAR model for each subject.
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