QUALITY OF PORTAL VERIFICATION IMAGES USING GLP7 FILM

Citation
T. Tada et al., QUALITY OF PORTAL VERIFICATION IMAGES USING GLP7 FILM, Academic radiology, 2(10), 1995, pp. 859-863
Citations number
8
Categorie Soggetti
Radiology,Nuclear Medicine & Medical Imaging
Journal title
ISSN journal
10766332
Volume
2
Issue
10
Year of publication
1995
Pages
859 - 863
Database
ISI
SICI code
1076-6332(1995)2:10<859:QOPVIU>2.0.ZU;2-W
Abstract
Rationale and Objectives. To improve portal verification radiographs, we tested the application of GLP7 film. Methods. The quality of the po rtal verification radiograph using the XV cassette-GLP7 film combinati on and the XL cassette-GLP7 film combination was investigated, The XV cassette-XV2 film combination and the SA cassette-GS screen-XTL film c ombination also were used for comparison. Results. The characteristic curves showed that the relative speeds were 0.32 and 0.47 for the XV-G LP7 and XL-GLP7 combinations and that the average gradients were 1.93, 2.14 and 1.32 for the XV-GLP7, XL-GLP7, and XV-XV2 combinations, resp ectively. In the experiment using Burger's phantom, the smallest visib le volumes were 11.8, 11.3, 28.7, and 19.6 mm(3) for the XV-GLP7, XL-G LP7, XV-XV2, and SA-GS-XTL combinations, respectively. In the lower do sage treatment in the clinic, there were no marked differences between the GLP7 film and XV2 film. However, in the higher dosage treatment, the GLP7 film had a better quality than did the XV2 film. Conclusion. Portal verification radiographs using GLP7 film are of sufficient qual ity for clinical use.