title: Statistical detection of nonvisible isodense subdural fluid collections.
abstract: An analytic method for detecting isodense subdural fluid collections from computed tomography (CT) scan pixel attenuation data is presented. Analysis of 44 CT scan levels from 8 patients with isodense subdural hematomas (ISDH) and 50 CT scan levels from 15 patients without ISDH indicates 6% false positive and 3% false negative errors if the analysis is restricted to noncontrast CT scans that demonstrate subcalvarial bilateral cortical attenuation symmetry in the pictorial display.
mesh_terms: D001284:Atrophy / Q000000981:diagnostic imaging; D001927:Brain Diseases / Q000000981:diagnostic imaging*; D002540:Cerebral Cortex / Q000000981:diagnostic imaging; D006408:Hematoma, Subdural / Q000000981:diagnostic imaging*; D006801:Humans; D011856:Radiographic Image Enhancement; D013223:Statistics as Topic; D014057:Tomography, X-Ray Computed / Q000379:methods*