article_snippet: Now a British hospital is trialling a laser that bleeps like a parking sensor on a car when the scalpel gets to the edge of the cancerous areas, letting surgeons know surgeons margins for error.
article_snippet: The device can read the differences in less than a second, and gives a warning sound if the surgeon is close to healthy tissue.
article_snippet: Having something that will make surgery safer and more accurate could be a real game-changer.
article_snippet: It can take up to 90 minutes for these biopsies to be tested and for results to be fed back to surgeons, all while the patient remains in the operating theatre.
article_snippet: A tumour molecule vibrates differently from healthy molecules under laser light, causing laser light to bounce back in a different way.
article_snippet: Having a device that takes less than a second to tell the difference between healthy and cancerous tissue means we could potentially avoid taking unnecessary biopsies, and also perform more surgeries in a day,’ Mr Vaqas says.
article_snippet: ‘Taking away healthy tissue can have disastrous consequences, so the probe is hugely exciting.
highlights_snippet: Laser helps medics tell difference between healthy and cancerous tissue .
  