title: The application of blurred undersubtraction in polytomography.
abstract: Over the years many methods have been tried to enhance an image for clinical diagnosis. One method, blurred undersubtraction, has involved filtering out the low frequency information and leaving the high frequency information. Presented here is a protocol outlining the use of blurred undersubtraction as it is applied to selected polytomographic studies.
mesh_terms: D000842:Ankle / Q000000981:diagnostic imaging; D002574:Cervical Vertebrae / Q000000981:diagnostic imaging; D005147:Facial Bones / Q000000981:diagnostic imaging; D006801:Humans; D011856:Radiographic Image Enhancement / Q000379:methods*; D012658:Sella Turcica / Q000000981:diagnostic imaging; D014056:Tomography, X-Ray / Q000379:methods*