An Evaluation of the Benefits of Simultaneous Acquisition on PET/MR Coregistration in Head/Neck Imaging

Figure 1

Example of qualitative well ranked coregistration results. From left to right: coronal MR image, fused PET/MR, and PET image from (a) PETMRo, (b) PETMRreg_ELX^RR, (c) PETMRreg_ELX^DR, (d) PETMRreg_MRD^RR, and (e) PETMRreg_MRD^DR. Both RR and DR with Elastix, (b) and (c), respectively, and Mirada, (d) and (e), respectively, show results comparable with intrinsic coregistration of simultaneous PET/MR (a). The Dice scores for this case are PETMRo = 0.95, PETMRreg_ELX^RR = 0.85, PETMRreg_ELX^DR = 0.86, PETMRreg_MRD^RR = 0.89, and PETMRreg_MRD^DR = 0.90.

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