B1 − non-uniformity correction of phased-array coils without measuring coil sensitivity

Parallel imaging can be used to increase SNR and shorten acquisition times, albeit, at the cost of image non-uniformity. B1 − non-uniformity correction techniques are confounded by signal that varies not only due to coil induced B1− sensitivity variation, but also the object's own intrinsic signal. Herein, we propose a method that makes minimal assumptions and uses only the coil images themselves to produce a single combined B1− non-uniformity-corrected complex image with the highest available SNR.

Source: Magnetic Resonance Imaging - April 17, 2018 Category: Radiology Authors: Frederick C. Damen, Kejia Caic Tags: Original contribution Source Type: research