Contrast-detail analysis of three flat panel detectors for digital radiography.
Journal Article (Journal Article)
In this paper we performed a contrast detail analysis of three commercially available flat panel detectors, two based on the indirect detection mechanism (GE Revolution XQ/i, system A, and Trixell/Philips Pixium 4600, system B) and one based on the direct detection mechanism (Hologic DirectRay DR 1000, system C). The experiment was conducted using standard x-ray radiation quality and a widely used contrast-detail phantom. Images were evaluated using a four alternative forced choice paradigm on a diagnostic-quality softcopy monitor. At the low and intermediate exposures, systems A and B gave equivalent performances. At the high dose levels, system A performed better than system B in the entire range of target sizes, even though the pixel size of system A was about 40% larger than that of system B. At all the dose levels, the performances of the system C (direct system) were lower than those of system A and B (indirect systems). Theoretical analyses based on the Perception Statistical Model gave similar predicted SNRT values corresponding to an observer efficiency of about 0.08 for systems A and B and 0.05 for system C.
Full Text
Duke Authors
Cited Authors
- Borasi, G; Samei, E; Bertolini, M; Nitrosi, A; Tassoni, D
Published Date
- June 2006
Published In
Volume / Issue
- 33 / 6
Start / End Page
- 1707 - 1719
PubMed ID
- 16872078
International Standard Serial Number (ISSN)
- 0094-2405
Digital Object Identifier (DOI)
- 10.1118/1.2191014
Language
- eng
Conference Location
- United States