Sound beams can destroy cancer tissue

SCIENTISTS HAVE begun using sound to treat cancer in experiments that could avoid the need for surgery.

The technique involves a high-intensity ultrasound beam about 10,000 times more powerful than that used to show pregnant women the developing foetus in the womb.

The beam is focused on a point inside the body where it "cooks" malignant tissue without harming neighbouring healthy tissue. A shot lasting one or two seconds raises the temperature to more than 55C, high enough to destroy the cells in the target area.

The technique is also being developed for the treatment of soldiers wounded in battle. Four in 10 battlefield deaths are caused by internal bleeding. A device that could "spot weld" damaged blood vessels in the field would save many lives.

Researchers at the Royal Marsden Hospital in London have used the technique experimentally on 23 patients with prostate, kidney and liver cancers. The treatment required no anaesthetic and caused nothing more than a slight tingling in the prostate gland, which the men involved described as "not unpleasant".

The patients all had advanced disease and the experiment was carried out only to see how well the treatment was tolerated.

Robert Shearer, medical director of the Royal Marsden and a consultant urologist who was involved in the trial, said: "It does seem to produce destruction of malignant tissue with minimal side-effects."

The technique, known as High Intensity Focused Ultrasound, uses transducers to produce the powerful energies required. The beam can be focused to a depth of 15 centimetres. It is so precise it is sharper than a scalpel.

Mr Shearer said the device, described in The Lancet, could be in use within two or three years to treat patients with advanced cancer which had spread to other organs, but it would need to be evaluatedcarefully to see if it extended survival.

"It is absolutely fascinating. It may be used for tissue destruction of metastatic disease [cancer which has spread]. But it may have an even more important role on the battlefield," he said.

American researchers funded by the military are hoping to develop a portable ultrasound device to locate and treat internal haemorrhages. A team at the University of Washington in Seattle has experimented on pigs' livers, creating a wall of cauterised tissue that allowed a thick lobe to be cut away with minimal bleeding.

Mr Shearer said: "The aim is to develop a device to stabilise a patient where they were injured and then get them back to a medical centre where they could be tidied up."

News
peoplePaper attempts to defend itself
Voices
voicesWe desperately need men to be feminists too
Life and Style
food + drink
Arts and Entertainment
British actor Idris Elba is also a DJ and rapper who played Ibiza last summer
film
PROMOTED VIDEO
Have you tried new the Independent Digital Edition apps?
News
ebooksAn unforgettable anthology of contemporary reportage
Latest stories from i100
Have you tried new the Independent Digital Edition apps?
Independent Dating
and  

By clicking 'Search' you
are agreeing to our
Terms of Use.

iJobs Job Widget
iJobs General

Account Executive/Sales Consultant – Permanent – Hertfordshire - £16-£20k

£16500 - £20000 Per Annum: Clearwater People Solutions Ltd: We are currently r...

KS2 PPA Teacher needed (Mat Cover)- Worthing!

£100 - £125 per day: Randstad Education Crawley: KS2 PPA Teacher currently nee...

IT Systems Manager

£40000 - £45000 per annum + pension, healthcare,25 days: Ashdown Group: An est...

IT Application Support Engineer - Immediate Start

£28000 per annum: Ashdown Group: IT Software Application Support Analyst - Imm...

Day In a Page

Syria air strikes: ‘Peace President’ Obama had to take stronger action against Isis after beheadings

Robert Fisk on Syria air strikes

‘Peace President’ Obama had to take stronger action against Isis after beheadings
Will Lindsay Lohan's West End debut be a turnaround moment for her career?

Lindsay Lohan's West End debut

Will this be a turnaround moment for her career?
'The Crocodile Under the Bed': Judith Kerr's follow-up to 'The Tiger Who Came to Tea'

The follow-up to 'The Tiger Who Came to Tea'

Judith Kerr on what inspired her latest animal intruder - 'The Crocodile Under the Bed' - which has taken 46 years to get into print
BBC Television Centre: A nostalgic wander through the sets, studios and ghosts of programmes past

BBC Television Centre

A nostalgic wander through the sets, studios and ghosts of programmes past
Secret politics of the weekly shop

The politics of the weekly shop

New app reveals political leanings of food companies
Beam me up, Scottie!

Beam me up, Scottie!

Celebrity Trekkies from Alex Salmond to Barack Obama
Beware Wet Paint: The ICA's latest ambitious exhibition

Beware Wet Paint

The ICA's latest ambitious exhibition
Pink Floyd have produced some of rock's greatest ever album covers

Pink Floyd have produced some of rock's greatest ever album covers

Can 'The Endless River' carry on the tradition?
Sanctuary for the suicidal

Sanctuary for the suicidal

One mother's story of how London charity Maytree helped her son with his depression
A roller-coaster tale from the 'voice of a generation'

Not That Kind of Girl:

A roller-coaster tale from 'voice of a generation' Lena Dunham
London is not bedlam or a cradle of vice. In fact it, as much as anywhere, deserves independence

London is not bedlam or a cradle of vice

In fact it, as much as anywhere, deserves independence
Vivienne Westwood 'didn’t want' relationship with Malcolm McLaren

Vivienne Westwood 'didn’t want' relationship with McLaren

Designer 'felt pressured' into going out with Sex Pistols manager
Jourdan Dunn: Model mother

Model mother

Jordan Dunn became one of the best-paid models in the world
Apple still coolest brand – despite U2 PR disaster

Apple still the coolest brand

Despite PR disaster of free U2 album
Scottish referendum: The Yes vote was the love that dared speak its name, but it was not to be

Despite the result, this is the end of the status quo

Boyd Tonkin on the fall-out from the Scottish referendum