Image quality in CT: From physical measurements to model observers

Highlights • This review summarises the methods used to assess image quality in CT. • CT optimisation is separated into two phases (unit and protocol oriented). • Signal detection theory as well as the task-based approach are presented. • The strengths and weaknesses of the different methods present...

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Bibliographic Details
Published in:Physica medica 2015-12, Vol.31 (8), p.823-843
Main Authors: Verdun, F.R, Racine, D, Ott, J.G, Tapiovaara, M.J, Toroi, P, Bochud, F.O, Veldkamp, W.J.H, Schegerer, A, Bouwman, R.W, Giron, I. Hernandez, Marshall, N.W, Edyvean, S
Format: Article
Language:English
Subjects:
Computed tomography
Humans
Image Processing, Computer-Assisted
Image quality
Model observer
Observer Variation
Patient dose optimisation
Quality Assurance, Health Care - methods
Radiology
Tomography, X-Ray Computed
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Summary:Highlights • This review summarises the methods used to assess image quality in CT. • CT optimisation is separated into two phases (unit and protocol oriented). • Signal detection theory as well as the task-based approach are presented. • The strengths and weaknesses of the different methods presented are addressed. • A summary of CT's figure of merits is provided.
ISSN:1120-1797
1724-191X
DOI:10.1016/j.ejmp.2015.08.007