Recently, ultrashort TE imaging based MR-based attenuation correction (MRAC) has been proposed in literature to overcome the intrinsic difficulty in MRI to resolve bone contrast and hence enable more reliable estimation of attenuation map. However, the long acquisition time required for UTE imaging still remains challenging. In this study, we propose a novel, rapid dual echo method for UTE based MRAC, which allows segmentation of bone, air, fat, and water with high spatial resolution (1mm3) in a single scan with extremely short scan time (35sec).
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