There is an increase in drug abusers resorting to injecting into the femoral artery (groin). Anecdotal evidence, found by Professor John Strang, has shown that those injectors who receive an ultrasound scan and are shown the image are more likely to stop injecting. The project implements a process – using agents – to automatically identify injectors as they are seen in the service, and randomize the ultrasound scanning to put the test on a more formal trial footing.

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