Mark Schuppert1,
Boris Keil2, Bastien Gurin2, Stefan Fischer3,
Laura Maria Schreiber3, Lawrence L. Wald2, 4
1Section
of Medical Physics, Department of Diagnostic and Interventional Radiology,
Johannes Gutenberg University Medical Center , Mainz, Germany; 2Department
of Radiology, A.A. Martinos Center for Biomedical Imaging, Massachusetts
General Hospital, Charlestown, MA, United States; 3Section of
Medical Physics, Department of Diagnostic and Interventional Radiology,
Johannes Gutenberg University Medical Center, Mainz, Germany; 4Harvard-MIT
Division of Health Sciences and Technology, Cambridge, MA, United States
We analyze several different geometrical arrangements of coil elements in a 64-channel phased-array cardiac coil for optimized SNR and g-factor values in the heart using magnetic field simulations (Biot-Savart law). The final coil pattern comprises 40 coil elements on the chest and 24 coil elements on the back each exhibiting a diameter of 75mm. Lateral arrangement of coil elements wrapping around the body is important and results in a homogeneous SNR distribution and low g-factor values in the heart simultaneously.