IMPROVEMENT IN SCINTILLATION CAMERAS OF THE ANGER TYPE

摘要

The peripheral part of the optical block of a gamma camera, which is formed by the scintillation crystal and the optical conductor, is provided with a diffusive light reflector, the reflection and optical diffusion properties of which are combined in relation to the wavelength of the scintillation light so that signal/distance curves for each of the photomultipliers used are substantially coincident within the useful field of the camera. This improvement results in a suitable compromise between on the one hand linearity and spatial uniformity and on the other hand spatial and energetic resolution of the gamma camera.