Abstract #1877
Roemer-Optimal Reconstruction of Hyperpolarized 13C Cardiac Images with an 8 Channel Coil
William Dominguez-Viqueira 1 , Benjamin Geraghty 1,2 , Justin Y.C. Lau 1,2 , Albert P Chen 3 , and Charles H Cunningham 1,4
1
Imaging Research, Sunnybrook Health Sciences
Centre, Toronto, Ontario, Canada,
2
Medical
Biophysics, University of Toronto, Toronto, Ontario,
Canada,
3
GE
Healthcare, Toronto, Ontario, Canada,
4
Medical
Biophyscis, University of Toronto, Toronto, Ontario,
Canada
Roemer-optimal coil combination using a Biot-Savart
numerical model of the sensitivity maps coefficients has
been successfully used previously in
13
C
images of the heart. The Biot-Savart numerical
estimation method was extended to the 8-channel receiver
array that will be used in human studies. Results were
compared to a low-pass-filter method and to sum of
squares. Estimated coefficients using Biot-Savart
resulted in better image quality than using a
low-pass-filter of the acquired images. SNR improvements
of up to a 100 % in areas closer to the base of the
heart were demonstrated by using the Roemer
reconstruction, as compared with sum-of-squares.
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