Abstract #0624
Bilateral Breast Imaging using Split-Symmetric Parallel Transmission
Ryan Brown 1 , Martijn A Cloos 1 , Christian Geppert 2 , Linda Moy 1 , Daniel K Sodickson 1 , and Graham C Wiggins 1
1
The Bernard and Irene Schwartz Center for
Biomedical Imaging, Dept. of Radiology, New York
University School of Medicine, New York, NY, United
States,
2
Siemens
Medical Solutions USA Inc., New York, NY, United States
High-field bilateral breast imaging is challenging
because of the conflicting requirements of a uniform
transmit field and a large field-of-view. This is
addressed in the proposed split-symmetric transmission
scheme, where symmetries in the body anatomy and coil
array are exploited to allow a given RF shim or set of
tailored pulses to be replicated across lateral and
contralateral coils. This allowed a substantial
advantage in the degrees of freedom associated with the
transmit optimization problem, and resulted in a uniform
excitation over a bilateral field-of-view. Important
benefits of this transmit system are that tailored
parallel pulses and dedicated lymph node coils provide
improved coverage in the posterior breast and in the
lymph nodes, both of which have been difficult to
visualize at 7T with standard transmit coils.
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