Volcanic processes disturbed the mass balance of the glacier, thereby accelerating the ablation processes.
Harvard doctors showed in 1992 that through-the-needle ablation could relieve excruciating pain from benign bone tumors.
One-year measurements of surface heat budget on the ablation zone of Antizana Glacier 15, Ecuadorian Andes.
Saltz worries that some patients who might be cured by liver surgery are instead getting ablation treatments.
But a new outpatient procedure that lets doctors zap Barrett's tissue with radiofrequency ablation (RFA) is showing promise.
Some of the radiologists who perform ablation procedures predict that it will eventually replace surgery for many small tumors.
This procedure, known as photothermal ablation, has undergone six years of animal testing.
When her daughter researched treatments online, they asked to be referred for a treatment called radio frequency ablation (RFA).
Cardiac ablation therapy to control an irregular heartbeat will no longer be available to most patients at the hospital.
BBC: NEWS | UK | England | Oxfordshire | Trust could axe 600 health posts
The irregular distribution and thickness of tephra provoked differential ablation, and tephra remobilization processes took place on the glacier surface.
"The biggest mistake of ablation was that there wasn't a big randomized study when the technology came out, " he says.
While ablation is generally safer than major surgery, serious--even fatal--complications can occur if the needle punctures or burns vital organs.
The doctor returned her cold-call e-mail, and suggested she go Rhode Island Hospital, where Dr. Damian Dupuy performed the ablation procedure.
Depending on how the metal is oriented as it plummets, ablation can also give it an asymmetry evoking the dynamism of flight.
One advantage of photothermal ablation is the lack of a chemical agent.
Unless ablation's backers can produce hard data showing how well it works, the procedure may continue to be a bit of an orphan.
Nor is photothermal ablation the only way of heat-treating cancer cells.
An ablation sends radio frequency energy into the part of the heart that is causing the irregular heartbeat and kills the cells that cause the problem.
Ablation is approved for inoperable liver tumors and painful bone tumors, and doctors are also testing it on kidney tumors, lung tumors and even breast cancers.
Now catheter ablation is being used for the most common rhythm problem atrial fibrillation, which plagues about 3 million Americans and 15 million people worldwide.
It was the first time the technique has been used in catheter ablation, where the organ's inner lining is ablated or "burned" to treat irregular heartbeats.
"We are in the beginning of what will be a huge new field of tumor ablation, " says interventional radiologist Stephen Solomon at the Memorial Sloan-Kettering Cancer Center.
Other possible treatments for arrhythmia include medication, surgery or ablation.
Because medical devices are regulated more loosely than drugs, the ablation devices were approved without anyone's having to affirm that they slowed cancer progression or increased survival above and beyond standard treatments.
For instance, while the vast majority of meteorites are stone, almost all sculpturals are made of an iron-nickel alloy, which takes on beautifully complex shapes as it falls to Earth through a process called ablation.
In milder cases you can have a small electric shock to get the heartbeat to return to normal, or like British Prime Minister Tony Blair had last year, a procedure called catheter ablation.
More than 200 catheter ablation operations have taken place at Glenfield Hospital, and six months ago Dr Ng used the Amigo robotic arm to carry out the procedure for the first time, but without the assistance of the 3D mapping system.
"She read a paper about this new procedure called radiofrequency ablation, and she wrote to the doctor who did the study, and asked him for the best place to go in the Northeast, " says James Parles, a pediatrician in Smithtown, New York.
应用推荐