Medical diagnosis is often made on the basis of information from visualisation instruments such as CT scanners. This information is currently used by medics only and, in most cases, browsed manually. This paper presents technical issues which are prerequisite to decision-support systems which analyse such data and provide new ways to present the data so as to make it most useful to clinicians, taking the domain of renal (kidney) cancer care as an example. In the long term such systems can also be used to improve communication between medics and patient, and may also enable communication with remote consultants.
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