"EAR" artifact in brain scans.
The ear closest to the camera may be imaged in high-resolution lateral views of the brain as a structure anterior to the lateral sinus. The artifact can usually be eliminated by taping the auricle down. Artifacts such as this can be expected to become somewhat more of a problem as image resolution improves.
D001927:Brain Diseases / Q000175:diagnosis*; D004431:Ear, External; D006801:Humans; D011877:Radionuclide Imaging