Sulieman M.S. Zobly and Abdelbagi O. Osman Pages 278 - 281 ( 4 )
Background: Stability of power supply is one of the main problems affecting the performance and continuity of medical equipment in a developing country. Gamma camera is one of medical equipment uses radio isotope for patient imaging.Objective: There are various parameters degraded image quality in gamma camera. This paper discusses the effect of stability of power supply on image performance. Methods: To perform this work a total of 125 intrinsic uniformity tests for a gamma camera connected to stable power supply and a total of 125 intrinsic uniformity test for a gamma camera connected to an un-stable power supply were used. Results: The integral uniformity (central and useful field of view) and differential uniformity (central and useful field of view) were calculated using 99mTc point source. Conclusion: The result shows that the quality of image degraded in unstable power supply; on the other hand gamma camera connected to the supply via uninterrupted power supply (UPS) was stable and gives highly uniform image in both central and useful field of view.
Planar gamma camera, interinsic uniformity, integral uniformity, differential uniformity, power supply.
Department of Med. physics & instrumentation, University of Gezira, Wad Medani