Figure 9.

PET images of the deformable PET-MRI phantom reconstructed using our MRI-based motion correction approach (MRI-based MC), without motion correction (no MC) as well as by reconstructing only events detected in the first PET motion frame (Frame #1). Reconstructed images are shown in the coronal (a) and the transaxial views (b) and are identically scaled. Grey arrows show artifacts on the uncorrected image due attenuation∕emission mismatches. Black arrows show regions of the uncorrected image with significant motion blurring.