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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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