Technical Note: Evaluating automatic tube current modulation in CT using the standard CTDI dosimetry phantom.
CT
CTDI phantom
automatic exposure control
image quality
spatial concordance
tube current modulation
Journal
Medical physics
ISSN: 2473-4209
Titre abrégé: Med Phys
Pays: United States
ID NLM: 0425746
Informations de publication
Date de publication:
Feb 2021
Feb 2021
Historique:
received:
24
07
2020
revised:
08
10
2020
accepted:
15
10
2020
pubmed:
25
10
2020
medline:
15
5
2021
entrez:
24
10
2020
Statut:
ppublish
Résumé
To assess the utility of the standard body CTDI phantom in characterizing the operation scheme of tube current modulation (TCM) systems in CT. The body CDTI phantom was used to characterize two TCM systems: TCM Modulated mA(z) along the z-axis did not substantially differentiate between configurations A and B. Correlation between ln(mA) and OR was found to be higher compared to correlation between ln(mA) and d Apart from routine CT dosimetry evaluations, the standard CTDI phantom positioned in configuration A or B may additionally be used by medical physicists to evaluate the performance of TCM operational characteristics.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
659-666Informations de copyright
© 2020 American Association of Physicists in Medicine.
Références
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