
Keyhole surgery helps to reduce post-operative pain, scarring, and the risk of infection after surgery.
But scientists have developed a new surgery technique - magnetising tissue that is being operated on.
This will enable surgeons to see what they are operating on more clearly, in particular making cancer treatment easier and more effective.
Magnetising cancer tumours will help surgeons avoid spilling cancer cells that may spread.
Researchers at the University of Dundee looked into the possibilities of magnetising tissue.
Forcing similar nano particles into cells using ultrasound or electric fields is one method being explored of making tissue magnetic.
Others involve mixing magnetic material with surgical glue, or injecting it directly into tissue.
As well as improving imaging, magnetic tissue could aid drug delivery and allow the creation of new and better surgical instruments.
It may also help prevent tumour cells escaping from an operation site into a patient's blood stream.
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