New surgical knife can instantly detect cancer
Jul-18-2013

Surgeons may have a new way to smoke out cancer.

An experimental surgical knife can help surgeons make sure they've removed all the cancerous tissue, doctors reported Wednesday. Surgeons typically use knives that vaporize tumors as they cut, producing a sharp-smelling smoke. The new knife analyzes the smoke and can instantly signal whether the tissue is cancerous or healthy.

Now surgeons have to send the tissue to a lab and wait for the results.

Zoltan Takats of Imperial College London suspected the smoke produced during cancer surgery might contain some important cancer clues. So he designed a "smart" knife hooked up to a refrigerator-sized mass spectrometry device on wheels that analyzes the smoke from cauterizing tissue.

The smoke picked up by the smart knife is compared to a library of smoke "signatures" from cancerous and non-cancerous tissues, information appears on a monitor: green means the tissue is healthy, red means cancerous and yellow means unidentifiable.

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