An automated image evaluation procedure for computed tomography systems

Keana D. Allert; Frank A. DiBianca

doi:10.1117/12.595744

6 April 2005 An automated image evaluation procedure for computed tomography systems

Keana D. Allert, Frank A. DiBianca

Author Affiliations +

Proceedings Volume 5749, Medical Imaging 2005: Image Perception, Observer Performance, and Technology Assessment; (2005) https://doi.org/10.1117/12.595744
Event: Medical Imaging, 2005, San Diego, California, United States

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.

Citation Download Citation

Keana D. Allert and Frank A. DiBianca "An automated image evaluation procedure for computed tomography systems", Proc. SPIE 5749, Medical Imaging 2005: Image Perception, Observer Performance, and Technology Assessment, (6 April 2005); https://doi.org/10.1117/12.595744

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