Browse by author
Lookup NU author(s): Dr Colin Kotre
Full text for this publication is not currently held within this repository. Alternative links are provided below where available.
This project aimed to produce programs to calculate the modulation transfer function (MTF), noise power spectrum (NPS) and detective quantum efficiency (DQE) of digital X-ray systems, given a suitable digital image. The MTF was calculated using the edge technique and the NPS was calculated from a flat field image. Both programs require a suitably edited DICOM image as input. The DQE was then calculated from the output of MTF and NPS programs. This required data external to the DQE program to estimate the number of quanta per mm(2) in the beam which formed the NPS image. All three programs run independent of each other on a PC and require no special software to be installed. Results for MTF, NPS and DQE for a Philips AC3 CR system are presented. In addition, the results for MTF from a Siemens Duo CT scanner with a specially designed PTFE edge are also shown.
Author(s): Padgett R, Kotre CJ
Publication type: Article
Publication status: Published
Journal: Radiation Protection Dosimetry
ISSN (print): 0144-8420
ISSN (electronic): 1742-3406
Publisher: Oxford University Press
Altmetrics provided by Altmetric