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


  • eng

Conference Location

  • United States