Abstract #2386
B1 mapping of the breast with a reference tissue method
Federico D Pineda 1 , Milica Medved 1 , Xiaobing Fan 1 , and Gregory Karczmar 1
1
Radiology, The University of Chicago,
Chicago, IL, United States
Accurate measurements of the B1 field are critical in
DCEMRI of the breast as small errors in the flip angle
can lead to significant bias in measurements of T1,
contrast media concentration, and pharmacokinetic
parameters. We present a novel method for mapping the B1
field across the breast. This method is based on the
fact that the T1 of fat in the breast can be accurately
measured and has very low inter/intra-patient
variability. The reference T1 in each image voxel is
used to calculate local B1. Then the full B1 map is
estimated. These maps were used to produce improved
estimates of native T1
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