An Image Tube Scintillation Camera for Use with Radioactive Isotopes Emitting Low-Energy Photons

Abstract
A scintillation camera composed of a 2-stage image converter tube coupled to a closed-circuit Orthicon television chain is described. The scintillation camera in this form is useful for the visualization of organs and structures containing radioactive substances emitting low-energy X-or gamma-ray photons. This camera is capable of providing images of organs containing approximately half a microcurie/g of radioactive substance in a period of a few seconds. The resolution of the described camera is limited for practical purposes only by the design of the collimator and by the statistics of the photons impinging upon the screen. The camera is capable of handling high-intensity photon information and is consequently particularly suitable for dynamic studies. The camera is presently undergoing a series of tests in clinical practice.

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