Short- and long-term effects of clinical audits on compliance with procedures in CT scanning.

Purpose: To test the hypothesis that quality clinical audits improve compliance with the procedures in computed tomography (CT) scanning.

Materials And Methods: This retrospective study was conducted in two hospitals, based on 6950 examinations and four procedures, focusing on the acquisition length in lumbar spine CT, the default tube current applied in abdominal un-enhanced CT, the tube potential selection for portal phase abdominal CT and the use of a specific "paediatric brain CT" procedure. The first clinical audit reported compliance with these procedures.