Abstract #4232

Reference-guided CS-MRI with Gradient Orientation Priors

Xi Peng¹, Shanshan Wang¹, Qingyong Zhu¹, and Dong Liang¹

¹Shenzhen Institutes of Advanced Technology, Shenzhen, China, People's Republic of

In various MR applications, a pre-scan is usually practicable that extra morphology information can be extracted from the reference image. However, with a reference image obtained from a different contrast mechanism, the signal variation in the reference may differ from that in the target image. In this work, we propose to exploit gradient orientation information, which is closely related to the anatomical structures but less dependent on the image contrast, to enable superior CS-based reconstruction. The proposed method was validated using multi-scan experiment data and is shown to provide high speed and high quality imaging.

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