Radiation Exposure to the Sacroiliac Joint From Low-Dose CT Compared With Radiography.

Objective: The primary objective of this study was to estimate the effective dose delivered to the sacroiliac joint (SIJ) from low-dose (LD) CT compared with that from radiography. Secondary objectives included evaluation of diagnostic quality of LD CT of the SIJ and development of a clinical protocol for LD CT of the SIJ.

Materials And Methods: Data from 36 patients (19 women, 17 men) undergoing LD CT for suspected renal colic were analyzed.