A comparison of the imaging characteristics of the new Kodak Hyper Speed G film with the current T-MAT G/RA film and the CR 9000 system.

Details

Serval ID
serval:BIB_EECA4F8E8AD1
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
A comparison of the imaging characteristics of the new Kodak Hyper Speed G film with the current T-MAT G/RA film and the CR 9000 system.
Journal
Physics in medicine and biology
Author(s)
Monnin P., Gutierrez D., Bulling S., Lepori D., Verdun F.R.
ISSN
0031-9155
Publication state
Published
Issued date
2005
Peer-reviewed
Oui
Volume
50
Number
19
Pages
4541-52
Language
english
Notes
Publication types: Comparative Study ; Journal Article - Publication Status: ppublish
Abstract
Three standard radiation qualities (RQA 3, RQA 5 and RQA 9) and two screens, Kodak Lanex Regular and Insight Skeletal, were used to compare the imaging performance and dose requirements of the new Kodak Hyper Speed G and the current Kodak T-MAT G/RA medical x-ray films. The noise equivalent quanta (NEQ) and detective quantum efficiencies (DQE) of the four screen-film combinations were measured at three gross optical densities and compared with the characteristics for the Kodak CR 9000 system with GP (general purpose) and HR (high resolution) phosphor plates. The new Hyper Speed G film has double the intrinsic sensitivity of the T-MAT G/RA film and a higher contrast in the high optical density range for comparable exposure latitude. By providing both high sensitivity and high spatial resolution, the new film significantly improves the compromise between dose and image quality. As expected, the new film has a higher noise level and a lower signal-to-noise ratio than the standard film, although in the high frequency range this is compensated for by a better resolution, giving better DQE results--especially at high optical density. Both screen-film systems outperform the phosphor plates in terms of MTF and DQE for standard imaging conditions (Regular screen at RQA 5 and RQA 9 beam qualities). At low energy (RQA 3), the CR system has a comparable low-frequency DQE to screen-film systems when used with a fine screen at low and middle optical densities, and a superior low-frequency DQE at high optical density.
Keywords
Radiographic Image Interpretation, Computer-Assisted, X-Ray Film, X-Ray Intensifying Screens
Pubmed
Web of science
Create date
29/02/2008 17:45
Last modification date
20/08/2019 16:16
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