Comparison of Low Dose Performance of Photon-Counting and Energy Integrating CT.
Computed tomography
Image quality
Low dose
Photon counting
Journal
Academic radiology
ISSN: 1878-4046
Titre abrégé: Acad Radiol
Pays: United States
ID NLM: 9440159
Informations de publication
Date de publication:
12 2021
12 2021
Historique:
received:
10
06
2020
revised:
23
07
2020
accepted:
26
07
2020
pubmed:
29
8
2020
medline:
24
11
2021
entrez:
29
8
2020
Statut:
ppublish
Résumé
The purpose of this study was to investigate the potential of photon-counting CT (PCCT) to improve quantitative image quality for low dose imaging compared to energy-integrating detector CT (EID CT). An investigational scanner (Siemens, Germany) with PCCT and EID CT subsystems was used to compare image quality performance at four dose levels: 1.7, 2, 4, 6 mGy CTDI With resolution unaffected by dose in both PCCT and EID CT, PCCT images exhibited 22.1-24.0% improvement in noise across dose levels evaluated. This noise improvement translated into a 29-41% improvement in CNR and 20-36% improvement in detectability index. For iodine contrast, PCCT images had a higher CNR for all combinations of iodine contrast and dose evaluated. For the conditions studied, PCCT exhibited superior image quality compared to EID CT. For iodine detection, PCCT offered a notable advantage with improved CNR at all doses and iodine concentration levels.
Identifiants
pubmed: 32855051
pii: S1076-6332(20)30456-6
doi: 10.1016/j.acra.2020.07.033
pmc: PMC7902731
mid: NIHMS1624400
pii:
doi:
Substances chimiques
Iodine
9679TC07X4
Types de publication
Journal Article
Research Support, N.I.H., Intramural
Langues
eng
Sous-ensembles de citation
IM
Pagination
1754-1760Subventions
Organisme : Intramural NIH HHS
ID : Z99 CL999999
Pays : United States
Informations de copyright
Copyright © 2020 The Association of University Radiologists. All rights reserved.
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