Gonad Dose to Children in Voiding Urethrocystography Performed with 70-mm Image-Intensifier Fluorography

摘要: In roentgen examination of the lower urinary tract ovaries lie in primary beam, and testes cannot always be effectively shielded without interfering with examination. such studies, therefore, low-dose radiographic methods are important. conjunction clinical use 70-mm fluorography voiding urethrocystography (7), gonad doses 41 children were measured compared from full-scale serial radiography. The subjects included 17 boys ages three months to ten years 24 girls two thirteen years. Technical Details A single-phase 500 mA generator was used an under-couch tube having a 1-mm focal spot. Beam filtration 2 mm A1. Focal spot-table-top distance 46 cm spot input screen 6-in. image intensifier usually 65 70 cm. Films made Philips camera. exposure, regulated by phototimer, about 3 8 mAs/frame at 90 kV. Eight thir...