Evaluation of a new ultraviolet-emitting rare-earth film-screen combination.
- 1 June 1997
- journal article
- Published by Oxford University Press (OUP) in The British Journal of Radiology
- Vol. 70 (834), 629-634
- https://doi.org/10.1259/bjr.70.834.9227257
Abstract
The performance of a 400 speed class DuPont Ultra Vision Rapid (UVR) film-screen combination has been evaluated and compared with that of DuPont Quanta Fast Detail screens with Cronex 10L film (QFD-200 speed class). The speed was calculated from the constructed characteristic curves (H&D) at different energies. Image quality was derived objectively using the Leeds test object TOR (CDR). An anthropomorphic phantom was then employed to determine image quality subjectively by means of radiologist appraisal. Lumbar spine and chest radiography of patients were performed to evaluate the potential for dose reduction in clinical conditions by measuring skin entrance doses with thermoluminescent dosimeters (TLDs). UVR provided better resolution (9 lp mm-1 as opposed to 8 lp mm-1) and contrast response than QFD. UVR has accommodated a wider exposure latitude than might be expected with conventional 400 speed class film-screen combinations. Use of UVR resulted in better image quality than use of QFD over a wide range of exposure factors. The use of UVR can result in a dose reduction of 50% with no loss in image quality.Keywords
This publication has 4 references indexed in Scilit:
- Image quality and patient dose for different screen–film combinationsThe British Journal of Radiology, 1994
- The role of screen parameters and print-through in the performance of film/screen systemsPhysics in Medicine & Biology, 1993
- The image quality characteristics of a novel ultra-high-resolution film/screen systemPhysics in Medicine & Biology, 1993
- The Evaluation of High-Speed Screen-Film Combinations in AngiographyRadiology, 1975