Fig. 10From: Practical issues and limitations of brain attenuation correction on a simultaneous PET-MR scannera Photograph of head phantom with headphones in place b PET image acquired without the headphones on, c PET image acquired with headphones positioned as in a, d the difference between the image with and without the headphones, as a percentage of the image without the headphones, superimposed onto a CT scan of the phantom with the headphones covering the earsBack to article page