Fig. 1From: Evaluation of three methods for delineation and attenuation estimation of the sinus region in MR-based attenuation correction for brain PET-MR imagingAn example of a conversion curve with MRI intensities (x-axis) and corresponding CT HU values (y-axis) for one subject. The average of all the sampled conversion curves from all subjects used as the final model for MRI-CT conversionBack to article page