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Identifier

000374795

Title

Ενδοσκοπική παλίνδρομος χολαγγειοπανγκρεατογραφία : Προσθήκη φίλτρων χαλκού για την βελτιστοποίηση της ακτινικής επιβάρυνσης

Alternative Title

Endoscopic retrograde cholangiopancreatography :.

Author

Αλεφαντινού, Στυλιανή Μιχ

Thesis advisor

Δαμηλάκης, Ιωάννης

Abstract

The purpose of this study was to determine and validate the optimum copper filtration for adult endoscopic retrograde cholangiopancreatography procedures. DAP and entrance-exit dose rates were measured for various added copper filters. Copper filter thickness of 0.24, 0.36 and 0.48 mm was chosen. 10 sets of clinical films taken with each of 0.24, 0.36, 0.48 mm copper and were reviewed following randomization, by two specialist gastroenterologists. Each set of conventional films was allocated a score for bile ducts, pancreatic duct and hepatic parenchyma on a scale of 1–3. All examinations but one was classified as useful. On adding 0.48 mm copper filtration, the mean dose–area product per examination was reduced by 68%, from 56.9 Gy cm2 to 18.2 Gy cm2. The estimated reduction in entrance dose rate was 40%. Image quality was not affected by the filters. Additional filtration of 0.48 mm copper for adult ERCP has now been implemented in routine clinical use at our hospital.

Language

Greek

Subject

Dose

ERCP

Fluoroscopy

Gastrointestinal system

Image quality

Ακτινοσκόπιση

Δόση

Ενδοσκοπική παλίνδρομος

Ποιότητα εικόνας