Effective dose to the patient undergoing superior vena cava stent.

Metallic stents have been recently introduced for treating superior vena cava (SVC) obstruction. Dose data, in terms of dose-area product (DAP), from 44 patients referred for SVC stent placement on a digital unit have been retrospectively analysed in terms of their fluoroscopic and radiographic components. The mean DAP for the 44 examinations was 42 Gy cm2 and the effective dose was estimated to be 5.8 mSv. The fluoroscopic component was approximately 80%, with a mean screening time for these examinations of 17 min. The mean number of digital exposures was 86.