Abstract
710
Learning Objectives: 1. The attendees will be able to describe the analysis of performance test data or the calculation of the performance parameters of gamma cameras from the image data acquired according to the NEMA guidelines. 2. They will be able to describe the image processing and analysis algorithms to calculate the performance parameters calculated from image data of the tests as sophisticated as the multiple window spatial registration (MWSR) or SPECT resolutions with and without scatter. 3. They will also be familiar with some of the image analysis techniques, which can be utilized to calculate the performance parameters, available within the MATLAB programming environment.
Abstract (summary): We have developed a unique set of image analysis algorithms to calculate the performance parameters of gamma cameras and SPECT systems from test data acquired according to the NEMA NU 1-2001 guidelines. The calculation methods are either completely automated or require very minimal user interaction; minimizing potential human errors. The core algorithms have been validated for accuracy and robustness. They have been extensively tested on images acquired by the gamma cameras from different vendors. All the algorithms are incorporated into a graphical user interface that provides a convenient way to process the data and report the results. The entire application has been developed in MATLAB programming environment and is compiled to run as a stand-alone application. The developed image analysis tools provide an automated, independent, convenient and accurate means to calculate the performance parameters of gamma cameras and SPECT systems. They substantially reduce the calculation and reporting time and make the sophisticated calculations possible within seconds, which would otherwise be manually impossible. In this presentation, we will demonstrate the algorithmic approaches to calculate the performance parameters for a total of nine tests on test images acquired according to the NEMA guidelines. The tests include the uniformity, MWSR, center of rotation, intrinsic resolution and linearity, and pixel size measurement, extrinsic resolution and SPECT resolution with and without scatter.
- Society of Nuclear Medicine, Inc.