. Person undergoing liver scintigraphy using a gamma camera controlled by an image processing computer. The patient being given the scan lies under the gamma camera's circular detector. In background, a medical physicist is checking data being input into the computer. The gamma camera is used to monitor and diagnose a range of disorders in different organs, by mapping radiation emitted from isotopes tagged to the various tracer substances that are used. For example, a cancer might appear as a distinct, brighly coloured area on one of the false-colour images produced by this device. MODEL RELEASED

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