Evaluation of Performance of the SPECT Camera in Elnilien Medical Diagnostic Centre in Khartoum

Abstract

The objective of this study is to evaluate the performance of the SPECT gamma camera at Alnilien Medical Diagnostic Centre of Khartoum. This study was carried out in Nuclear Medicine Department in Alnelein Medical Diagnostic Centre (NMDC) and the results were compared with the international guidelines. The study evaluates the following parameters: energy resolution, uniformity, sensitivity and linearity. All results that obtained from the study have been compared with the acceptance limits with IAEA and NEMA -2001 standards. The results reveal that the energy resolution showed a central peak of the energy at 140KVp and the value of the energy resolution was 7.6%. Also results showed that the average of differential uniformity was 3.4% and it was within the acceptable value, and the integral uniformity was 1.94%. Also the results showed that the average of sensitivity was 83.4cpm/MBq , and the results reveal the average linearity value of 1.3mm that detect distortion of linearity due to X and Y positions do not change linearly with displacement distance of radiation source across the face of the detector. The quality of medical images was high and provides good care of patients. A regular quality assurance tests improve quality management of nuclear medicine imaging.