Prospective quantitative quality assurance and deformation estimation of MRI-CT image registration in simulation of head and neck radiotherapy patients

Highlights • MRI-CT deformable image registration was not superior to rigid registration.• Dice similarity coefficients were 0.65, 0.62, and 0.63 for deformable registrations.• Dice similarity coefficient was 0.63 for rigid registration.• Registration quality was superior in muscle and gland compared to bone and vessel.

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