Dose reduction in evacuation proctography.

C Hare, S Halligan, C I Bartram, R Gupta, A E Walker, I Renfrew

Journal: European radiology 2001;11(3):432-4

PMID: 11288848

Abstract

The goal of this study was to reduce the patient radiation dose from evacuation proctography. Ninety-eight consecutive adult patients referred for proctography to investigate difficult rectal evacuation were studied using a digital imaging system with either a standard digital program for barium examinations, a reduced dose digital program (both with and without additional copper filtration), or Video fluoroscopy. Dose-area products were recorded for each examination and the groups were compared. All four protocols produced technically acceptable examinations. The low-dose program with copper filtration (median dose 382 cGy cm2) and Video fluoroscopy (median dose 705 cGy cm2) were associated with significantly less dose than other groups (p < 0.0001). Patient dose during evacuation proctography can be reduced significantly without compromising the diagnostic quality of the examination. A digital program with added copper filtration conveyed the lowest dose.

Address: Intestinal Imaging Centre, St Mark's Hospital, London, UK.

DOI: 10.1007/s003300000613

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MeSH Terms: Adult, Aged, Barium Sulfate, Contrast Media, Defecation, Diatrizoate Meglumine, Female, Fluoroscopy, Humans, Image Enhancement, Image Processing, Computer-Assisted, Male, Middle Aged, Radiation Dosage, Rectal Diseases, Rectum, Video Recording