RT Journal Article
SR Electronic
T1 Intrinsic Uniformity and Relative Sensitivity Quality Control Tests for Single-Head Gamma Cameras
JF Journal of Nuclear Medicine Technology
JO J. Nucl. Med. Technol.
FD Society of Nuclear Medicine
SP 252
OP 256
VO 28
IS 4
A1 Elkamhawy, Abdelhamid A.
A1 Rothenbach, Joseph R.
A1 Damaraju, Srikanth
A1 Badruddin, Shamim M.
YR 2000
UL http://tech.snmjournals.org/content/28/4/252.abstract
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.