iQMetrix-CT: New software for task-based image quality assessment of phantom CT images.
Computer-assisted image analysis
Image quality
Multidetector computed tomography
Software
Task-based image quality assessment
Journal
Diagnostic and interventional imaging
ISSN: 2211-5684
Titre abrégé: Diagn Interv Imaging
Pays: France
ID NLM: 101568499
Informations de publication
Date de publication:
Nov 2022
Nov 2022
Historique:
received:
25
05
2022
accepted:
27
05
2022
pubmed:
7
7
2022
medline:
9
11
2022
entrez:
6
7
2022
Statut:
ppublish
Résumé
The purpose of this article was to explain how the new iQMetrix-CT software works, as well as to describe its current potential and discuss its future applications. iQMetrix-CT was developed by a working group from the French Society of Medical Physicists (SFPM). This software calculates three advanced metrics, which have been adapted to take into account the non-linear and non-stationary properties of iterative reconstruction algorithms. Noise power spectrum is calculated to assess noise texture and noise magnitude in the frequency domain. The task-based transfer function is computed to assess the spatial resolution under conditions of contrast and noise similar to the lesions encountered in clinical practice. Finally, the detectability index is used to estimate the radiologist's ability to perform a given task such as detecting a simulated lesion. These metrics are very useful to evaluate the performance of reconstruction algorithms in term of image quality and optimize the doses of a given protocol or to evaluate and compare a new technology.
Identifiants
pubmed: 35792006
pii: S2211-5684(22)00111-5
doi: 10.1016/j.diii.2022.05.007
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
555-562Informations de copyright
Copyright © 2022. Published by Elsevier Masson SAS.