Comparing the performance of two gamma cameras under high counting rates: principles and practice.

摘要: The performance of two large Anger cameras at high counting rates was compared, and the principles for measuring relevant parameters, especially deadtime loss coincidence artifacts, are discussed. results demonstrate importance following factors: modern pulse-shaping circuitry with short paralyzable deadtime, anti-pileup circuit, uniform energy information within field view, which requires separate summing matrices position. Elaborate testing specifications should be carried out before purchase a gamma camera.