Assessment of task-based image quality for abdominal CT protocols linked with national diagnostic reference levels.
Diagnostic reference levels
Multidetector computed tomography
Radiation protection
Journal
European radiology
ISSN: 1432-1084
Titre abrégé: Eur Radiol
Pays: Germany
ID NLM: 9114774
Informations de publication
Date de publication:
Feb 2022
Feb 2022
Historique:
received:
11
01
2021
accepted:
29
06
2021
revised:
04
06
2021
pubmed:
31
7
2021
medline:
1
2
2022
entrez:
30
7
2021
Statut:
ppublish
Résumé
To assess task-based image quality for two abdominal protocols on various CT scanners. To establish a relationship between diagnostic reference levels (DRLs) and task-based image quality. A protocol for the detection of focal liver lesions was used to scan an anthropomorphic abdominal phantom containing 8- and 5-mm low-contrast (20 HU) spheres at five CTDI For the detection of 8-mm spheres, the image quality reached a high level (mean AUC over all CTs higher than 0.95) at 11 mGy. For the detection of 5-mm spheres, the AUC never reached a high level of image quality. Variability between CTs was found, especially at low dose levels. For the search of renal stones, the AUC was nearly maximal even for the lowest dose level. Comparable task-based image quality cannot be reached at the same dose level on all CT scanners. This variability implies the need for scanner-specific dose optimization. • There is an image quality variability for subtle low-contrast lesion detection in the clinically used dose range. • Diagnostic reference levels were linked with task-based image quality metrics. • There is a need for specific dose optimization for each CT scanner and clinical protocol.
Identifiants
pubmed: 34327581
doi: 10.1007/s00330-021-08185-1
pii: 10.1007/s00330-021-08185-1
pmc: PMC8794993
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1227-1237Subventions
Organisme : Bundesamt für Gesundheit
ID : 17.017358.
Informations de copyright
© 2021. The Author(s).
Références
Med Phys. 2019 Nov;46(11):5360-5365
pubmed: 31484208
Phys Med Biol. 2013 Oct 21;58(20):7159-82
pubmed: 24051342
Phys Med. 2013 Jan;29(1):99-110
pubmed: 22217444
Phys Med. 2018 Apr;48:111-118
pubmed: 29728223
Insights Imaging. 2020 Aug 17;11(1):96
pubmed: 32804275
Radiology. 2004 Dec;233(3):649-57
pubmed: 15498896
Med Phys. 2018 Jul;45(7):3019-3030
pubmed: 29704868
Rofo. 2019 Aug;191(8):739-751
pubmed: 30665250
Semin Nucl Med. 2011 Nov;41(6):419-36
pubmed: 21978445
Phys Med. 2017 Jan;33:16-25
pubmed: 28003136
Phys Med Biol. 2016 Mar 7;61(5):2083-108
pubmed: 26895467
Radiology. 2017 Sep;284(3):777-787
pubmed: 28170300
Med Phys. 2017 Apr;44(4):1301-1311
pubmed: 28122119
Med Phys. 2007 Apr;34(4):1364-71
pubmed: 17500467
J Radiol Prot. 2018 Sep;38(3):967-989
pubmed: 29769433
Radiat Prot Dosimetry. 2015 Jul;165(1-4):95-7
pubmed: 25821213
Med Phys. 2016 Dec;43(12):6497
pubmed: 27908164
Am J Gastroenterol. 2014 Sep;109(9):1328-47; quiz 1348
pubmed: 25135008
Eur Radiol. 2017 Nov;27(11):4775-4785
pubmed: 28593428
Eur Radiol. 2020 Mar;30(3):1690-1700
pubmed: 31748858
Radiology. 2015 Aug;276(2):499-506
pubmed: 25811326
Phys Med Biol. 2007 Nov 7;52(21):6485-95
pubmed: 17951857
Z Med Phys. 2017 Jun;27(2):86-97
pubmed: 27156923
Phys Med. 2015 Dec;31(8):823-843
pubmed: 26459319
Radiat Prot Dosimetry. 2021 Oct 12;195(3-4):289-295
pubmed: 33647105
Acad Radiol. 2017 Jul;24(7):876-890
pubmed: 28262519
Phys Med Biol. 2014 Jul 7;59(13):3389-404
pubmed: 24875060
Br J Radiol. 2015 Jan;88(1045):20140344
pubmed: 25430807
Ann ICRP. 2017 Oct;46(1):1-144
pubmed: 29065694
J Appl Clin Med Phys. 2017 Jan;18(1):251-259
pubmed: 28291920
Invest Radiol. 2020 Sep;55(9):556-558
pubmed: 32701619
Br J Radiol. 2003 Dec;76(912):866-74
pubmed: 14711773
Phys Med Biol. 2015 Jan 21;60(2):R1-75
pubmed: 25564960
Eur Radiol. 2018 Dec;28(12):5203-5210
pubmed: 29858638
Eur Radiol. 2019 Dec;29(12):6794-6804
pubmed: 31144074
Radiology. 2019 Dec;293(3):491-503
pubmed: 31660806
IEEE Trans Med Imaging. 2015 Feb;34(2):453-64
pubmed: 25265629
Med Phys. 2017 Sep;44(9):e153-e163
pubmed: 28901621
Med Phys. 2011 Apr;38(4):1754-68
pubmed: 21626910
Phys Med. 2019 May;61:18-27
pubmed: 31151575
Radiat Prot Dosimetry. 2016 Jun;169(1-4):73-7
pubmed: 26922787