Statistical detection of nonvisible isodense subdural fluid collections

Michael H Reid, Arthur B. Dublin

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


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 69? 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.

Original languageEnglish (US)
Pages (from-to)491-496
Number of pages6
JournalJournal of Computer Assisted Tomography
Issue number4
StatePublished - 1979


  • Attenuation values
  • Computed tomography
  • Head
  • Hematomas
  • Subdural
  • Subdural fluid collection
  • Wounds and injuries

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology


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