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.

Détails

ID Serval
serval:BIB_EECA4F8E8AD1
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
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.
Périodique
Physics in medicine and biology
Auteur(s)
Monnin P., Gutierrez D., Bulling S., Lepori D., Verdun F.R.
ISSN
0031-9155
Statut éditorial
Publié
Date de publication
2005
Peer-reviewed
Oui
Volume
50
Numéro
19
Pages
4541-52
Langue
anglais
Notes
Publication types: Comparative Study ; Journal Article - Publication Status: ppublish
Résumé
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.
Mots-clé
Radiographic Image Interpretation, Computer-Assisted, X-Ray Film, X-Ray Intensifying Screens
Pubmed
Web of science
Création de la notice
29/02/2008 18:45
Dernière modification de la notice
03/03/2018 22:33
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