title: The grain in the stone: a computer search for hidden CT patterns.
abstract: Relatively simple but time-consuming computer manipulations of basic CT images have been carried out. We have been unsuccessful in finding significant information when the skewness or kurtosis of the CT image is computed and displayed, but have found recognizable and useful new gray scale images upon reconstruction of sigma mode textures.
mesh_terms: D001921:Brain / Q000000981:diagnostic imaging*; D001927:Brain Diseases / Q000000981:diagnostic imaging; D001932:Brain Neoplasms / Q000000981:diagnostic imaging; D003201:Computers; D005909:Glioblastoma / Q000000981:diagnostic imaging; D006406:Hematoma / Q000000981:diagnostic imaging; D006801:Humans; D007089:Image Enhancement; D008577:Meningeal Neoplasms / Q000000981:diagnostic imaging; D008579:Meningioma / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed