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Today, doctors who really
want to see if a wound is healing have to do a biopsy or some other invasive
technique that, besides injuring an already injured patient, can really only
offer information about a small area. But a technology called hyperspectral
imaging offers doctors a noninvasive, painless way to discriminate between
healthy and diseased tissue and reveal how well damaged tissue is healing over
a wide area. The catch? A lack of calibration standards is impeding its use.