Calculating Gamma Camera Uniformity Parameters: Beyond the Vendor-specific Protocol

The aim of this study was to develop and verify a personal computer-based software tool for calculating uniformity indices of gamma camera. The program was developed in MATLAB R2013b under Microsoft Windows operating system. Noise-less digital phantoms with known uniformity parameters were used to v...

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Bibliographic Details
Published in:Indian journal of nuclear medicine 2017-10, Vol.32 (4), p.279-282
Main Authors: Pandey, Anil Kumar, Sharma, Param Dev, Kumar, Jay Prakash, Saroha, Kartik, Patel, Chetan, Bal, Chandra Sekhar, Kumar, Rakesh
Format: Article
Language:English
Subjects:
Agreements
Cameras
Computed tomography
Electric equipment industry
Exports
Image acquisition
International economic relations
Mathematical analysis
Medical imaging
Noise
Nuclear medicine
Original
Personal computers
Physics
Quality control
Software
Software development tools
Software industry
Source studies
Tomography
Window systems
Windows (computer programs)
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Summary:The aim of this study was to develop and verify a personal computer-based software tool for calculating uniformity indices of gamma camera. The program was developed in MATLAB R2013b under Microsoft Windows operating system. Noise-less digital phantoms with known uniformity parameters were used to verify the accuracy of the program. Two hundred and forty-four Co-57 flood source images were acquired on Symbia T6 and Discovery nuclear medicine/computed tomography 670. The uniformity indices of these images were determined with their respective vendor's software and also by the tool developed. Bland-Altman plots were used for measuring the agreements between the developed program and the vendor's program for the calculation of uniformity indices. The tool for calculating uniformity indices was found to be accurate. Uniformity indices measured with the tool revealed a very good correlation with vendor's software based on Bland-Altman analysis, as almost all measurements were within the ±2 standard deviation range. The software tool for calculation of uniformity indices is accurate, and the uniformity indices calculated by it are in agreement with uniformity indices calculated by the vendor's software.
ISSN:0972-3919
0974-0244
DOI:10.4103/ijnm.IJNM_67_17