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Identification of the pleural fissures with computed tomography.

The pleural fissures can be identified as avascular planes within the pulmonary parenchyma on CT scans. A retrospective analysis of 23 consecutive scans was conducted to consider identification of fissures. On 21% of the axial images, a ''ground glass'' band was identified within the avascular plane, probably due to partial volume averaging of the pleural fissure with the adjacent lung. The pleural fissures could be identified in 84% of cases.