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Proceedings Paper

An automated image evaluation procedure for computed tomography systems
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Paper Abstract

A procedure is developed that enables comprehensive and automatic image quality evaluation of computed tomography (CT) systems. This procedure includes custom-designed software and an image quality phantom composed of subsections with regional test objects. The phantom is designed so that the maximum amount of information concerning image quality and system performance can be obtained in a single scan. The software automatically analyzes phantom images and generates measurements of image quality that are both quantitative and objective. The image quality parameters that will be attained from a single scan of the phantom include: spatial resolution, contrast, contrast signal-to-noise ratio, linearity, uniformity, slice thickness, temporal resolution, and dose. This evaluation procedure provides a simple, automated method of quality control. The phantom and procedure can also be used as a research tool for studying modifications of CT system components. In this study, we present results from a mathematical model of the phantom. We discuss the design and validation of the phantom and accompanying software.

Paper Details

Date Published: 6 April 2005
PDF: 11 pages
Proc. SPIE 5749, Medical Imaging 2005: Image Perception, Observer Performance, and Technology Assessment, (6 April 2005); doi: 10.1117/12.595744
Show Author Affiliations
Keana D. Allert, The Univ. of Tennessee Health Science Ctr. (United States)
Frank A. DiBianca, The Univ. of Tennessee Health Science Ctr. (United States)


Published in SPIE Proceedings Vol. 5749:
Medical Imaging 2005: Image Perception, Observer Performance, and Technology Assessment
Miguel P. Eckstein; Yulei Jiang, Editor(s)

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