A potential breakthrough in spotting tumour growth has been revealed
RESEARCHERS have discovered a NEW cancer test that could revolutionise
early detection of dangerous tumours stopping the spread and potentially
saving.
The new imaging test spots the most aggressive cancerous tumours before
they have chance to spread, and will give much-needed hope to future
cancer patients, finds study.
This exciting breakthrough could mean dangerous tumours are dealt with
quickly and enables doctors to plan more effective courses of
radiotherapy.
Scientists from the University of Manchester and The Institute of Cancer
Research in London set out to develop magnetic resonance imagining
(MRI) technology able to map areas of oxygen deprivation within tumours.
They called the new technology, oxygen-enhanced MRI.
The researchers explain that hypoxia - a deficiency in the amount of
oxygen reach tissue in the body - is often a sign that cancer is growing
aggressively.
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| Scientists plan to use oxygen-enhanced MRI |
Hypoxia plays a central role in tumour progression and resistance to
therapy, by stimulating the growth of blood vessels within tumours,
fuelling the spread of cancerous cells around the body.
Using the technology, the scientists were able to map the hypoxia in
tumours by monitoring alterations in image intensity caused by
fluctuations in the concentration of dissolved oxygen in blood plasma
and tissue fluid.
The areas taking up the extra oxygen are easily detectable as they show
up more intensely on an MRI scan, compared to the hypoxic tumour areas
which tend to be depleted of oxygen.
Study co-leader Dr Simon Robinson, of The Institute of Cancer Research,
said: "Our technique uses MRI technology to detect tumours with areas of
oxygen depletion, which tend to be more aggressive and more resistant
to radiotherapy and chemotherapy.
"Our study provides strong pre-clinical evidence to validate the use of
oxygen-enhanced MRI to identify, quantify and map tumour hypoxia.”
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| Hypoxia plays a central role in tumour progression, scientists are using this to spot tumour spread |
"Our findings from studies in mice are already being translated for use on conventional clinical MRI scanners.
"Ultimately we hope that oxygen-enhanced MRI will not only to identify the most dangerous tumours, but to assist radiotherapy treatment planning and for monitoring treatment response.”
Aside from early detection being a boost to a positive prognosis, this scientific breakthrough could mean that doctors are able to tailor treatment to a patient’s needs.
Nell Barrie, senior science information manager at Cancer Research UK, said: "When cancer cells run out of oxygen, they're more likely to spread from the original tumour, making the disease much harder to treat.
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| Cancer kills just over 160,000 people in the UK every year |
"By combining different techniques such as imaging and radiotherapy, these promising results can be translated into benefits for patients in the years ahead.”
After being tested on mice, the research is being further developed though clinical trials involving cancer patients.
The study, published in the journal Cancer Research, could also lead to new ways of monitoring whether radiotherapy or some cancer drugs are working.
More than 330,000 people are diagnosed with cancer every year in the UK and there are just over 160,000 deaths.
Preventable cases of cancer currently stand at 42 per cent. Cancer survival is also improving and as has doubled in the last 40 years in the UK.
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