PT  - JOURNAL ARTICLE
AU  - Elkamhawy, Abdelhamid A.
AU  - Rothenbach, Joseph R.
AU  - Damaraju, Srikanth
AU  - Badruddin, Shamim M.
TI  - Intrinsic Uniformity and Relative Sensitivity Quality Control Tests for Single-Head Gamma Cameras
DP  - 2000 Dec 01
TA  - Journal of Nuclear Medicine Technology
PG  - 252--256
VI  - 28
IP  - 4
4099  - http://tech.snmjournals.org/content/28/4/252.short
4100  - http://tech.snmjournals.org/content/28/4/252.full
SO  - J. Nucl. Med. Technol.2000 Dec 01; 28
AB  - Objective: We sought to determine the best parameters for rapid performance of daily quality control testing of intrinsic uniformity and relative sensitivity for the single-head gamma- camera system in our nuclear medicine department. Methods: The effects of the following parameters on intrinsic uniformity were studied: gamma source activity, number of acquired counts for the flood image, source-to-camera distance, image matrix size, and source volume. The dead time of the system was determined experimentally using the two-source method for accurate calculation of relative sensitivity. Results: A set of parameters for rapid performance of daily gamma-camera intrinsic uniformity and relative sensitivity was determined. The dead time of our gamma-camera system was found to be 4.5 ± 0.2 μs. Conclusion: With our recommended parameters, the intrinsic uniformity and relative sensitivity quality control testing can be performed in 5–6 min. The dead time of each gamma- camera system must be determined experimentally in each nuclear medicine department.