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Medical Biophysics

UT GSBS Dissertations and Theses (Open Access)

Gamma camera

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New Tools For Monitoring Gamma Camera Uniformity, Brad K. Lofton Dec 2010

New Tools For Monitoring Gamma Camera Uniformity, Brad K. Lofton

UT GSBS Dissertations and Theses (Open Access)

Detector uniformity is a fundamental performance characteristic of all modern gamma camera systems, and ensuring a stable, uniform detector response is critical for maintaining clinical images that are free of artifact. For these reasons, the assessment of detector uniformity is one of the most common activities associated with a successful clinical quality assurance program in gamma camera imaging. The evaluation of this parameter, however, is often unclear because it is highly dependent upon acquisition conditions, reviewer expertise, and the application of somewhat arbitrary limits that do not characterize the spatial location of the non-uniformities. Furthermore, as the goal of any ...