Auger cameras

These are unique to scintillation cameras, known as Auger cameras, used in nuclear medicine studies. Approximately 19-91 PMTs are mounted on a Na(Tl) crystal used in the camera. These crystals are typically-thick. The number of PMTs, which are optically coupled to the back of the crystal, is determined by the size and shape of the crystal. A maximum amount of light will be received by the PMT nearest to the point of interaction compared with the other PMTs, which are positioned differently. The amount of light received in these PMTs is proportional to the solid angle subtended by the PMT. Therefore, X-Y-posi-tioning of the camera has to be controlled and known so that X-Y-coordinate of the y-Ray interaction can be assessed accurately. These data are stored in a computer and then processed or recorded on Polaroid or X-Ray films. 

Scintigraphy Imaging technique that uses an Auger (or y) camera to visualize the distribution of radioisotopes within the human body. 

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