AffiliationDept. of Med. Phys. & Bioeng., Christie Hospital & Holt Radium Inst., Manchester, UK
MetadataShow full item record
AbstractThe design and construction of contrast-detail detectability phantoms for the assessment of the imaging performance of CT scanners are described. These phantoms have been employed to undertake a series of measurements on a number of different machines. The results are expressed in terms of object contrast which is consistent with the conventional definition of radiological contrast. For one particular scanner, the imaging performance of a number of image reconstruction and post-processing filters has been investigated. The results indicate that there was no observed energy dependence of contrast-detail detectability once differences in technique factors and attenuation were taken into account. A similar conclusion was drawn from the results of a set of measurements made to examine the effect on detectability of additional filtration.
CitationContrast-detail assessment of computed tomography scanners. 1986, 31 (9):993-1003 Phys Med Biol
JournalPhysics in Medicine and Biology
- Assessment of errors caused by X-ray scatter and use of contrast medium when using CT-based attenuation correction in PET.
- Authors: Ay MR, Zaidi H
- Issue date: 2006 Nov
- Experimental assessment of the influence of beam hardening filters on image quality and patient dose in volumetric 64-slice X-ray CT scanners.
- Authors: Ay MR, Mehranian A, Maleki A, Ghadiri H, Ghafarian P, Zaidi H
- Issue date: 2013 May
- CT head-scan dosimetry in an anthropomorphic phantom and associated measurement of ACR accreditation-phantom imaging metrics under clinically representative scan conditions.
- Authors: Brunner CC, Stern SH, Minniti R, Parry MI, Skopec M, Chakrabarti K
- Issue date: 2013 Aug
- Performance evaluation of an 85-cm-bore X-ray computed tomography scanner designed for radiation oncology and comparison with current diagnostic CT scanners.
- Authors: Garcia-Ramirez JL, Mutic S, Dempsey JF, Low DA, Purdy JA
- Issue date: 2002 Mar 15
- Automated assessment of low contrast sensitivity for CT systems using a model observer.
- Authors: Hernandez-Giron I, Geleijns J, Calzado A, Veldkamp WJ
- Issue date: 2011 Jul