Optimization of image quality and radiation dose using different cone-beam CT exposure parameters.
Cone–beam computed tomography
Extremities
Image quality
Radiation dose reduction
Journal
European journal of radiology
ISSN: 1872-7727
Titre abrégé: Eur J Radiol
Pays: Ireland
ID NLM: 8106411
Informations de publication
Date de publication:
Jul 2019
Jul 2019
Historique:
received:
19
01
2019
revised:
21
03
2019
accepted:
04
04
2019
entrez:
3
6
2019
pubmed:
4
6
2019
medline:
5
9
2019
Statut:
ppublish
Résumé
To investigate and optimize the impact of different exposure parameters on image quality and radiation dose for a latest generation orthopedic cone-beam CT system. 110 consecutive scans of the same cadaver forearm were performed before and after the insertion of a distal radius plate on the palmar radius to achieve highest intra-individual comparability. All scans were conducted on a latest generation cone-beam CT scanner (Carestream OnSight 3D Extremity System, Carestream Health, Rochester, NY, USA). Extremity imaging was performed using different combinations of tube voltage (kV) and tube current - exposure time product (mAs). Radiation dose (DLP and CTDI Highest radiation dose was achieved using the manufacturers' suggested standard protocol (90-kV and 5.0 mAs with DLP of 111.91 mGy*cm and CTDI Even with lowest exposure settings, orthopedic extremity CBCT revealed good overall image quality. The best result regarding subjective image quality was achieved with 85-kV / 4.7 mAs with a dose reduction of 18,9% compared to the manufacturer's recommended protocol (90-kV and 5.0 mAs).
Identifiants
pubmed: 31153576
pii: S0720-048X(19)30130-5
doi: 10.1016/j.ejrad.2019.04.005
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
68-75Informations de copyright
Copyright © 2019 Elsevier B.V. All rights reserved.