Niobium filters for dose reduction in pediatric radiology.
The performance of a niobium filter, with K-edge at 19 keV, and a copper filter have been studied concerning absorbed dose, image quality and tube loading. Absorbed doses were measured with TLD. To evaluate image quality a perspex phantom with image quality test objects was used. In comparison with a conventional filter made of copper no significant advantage was obtained with the niobium filter.
Jangland
L
L
Department of Hospital Physics, Akademiska Sjukhuset, Uppsala, Sweden.
Axelsson
B
B
D003300:Copper / Q000627:therapeutic use; D005374:Filtration / Q000295:instrumentation / Q000379:methods*; D009556:Niobium / Q000627:therapeutic use*; D010372:Pediatrics; D011829:Radiation Dosage; D011871:Radiology / Q000379:methods
D009556:Niobium; D003300:Copper