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Non-invasive Brain Surgery Moves A Step Closer

Date:
August 19, 2009
Source:
Focused Ultrasound Surgery Foundation & Fibroid Relief
Summary:
Medical researchers have completed a pilot study using transcranial MR-guided focused ultrasound to treat 10 patients with neuropathic pain.

MRI image of one of the patients in the study. Arrows show two small symmetrical lesions in the thalamus of the brain after the non-invasive procedure.
Credit: Courtesy of Dr. Jeanmonod and colleagues

A team of researchers working at the MR-Center of the University Children's Hospital in Zόrich has completed a pilot study using transcranial MR-guided focused ultrasound to treat 10 patients with neuropathic pain.

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The origin of chronic pain in these patients included post amputation phantom limb syndrome, nerve injury, stroke, trigeminal neuralgia and post herpetic neuralgia from shingles.

The findings will be published in a forthcoming issue of Annals of Neurology.

“This study showed that we can perform successful operations in the depth of the brain without opening the cranium or physically penetrating the brain with medical tools, something that appeared to be unimaginable only a few years ago,” says Daniel Jeanmonod M.D., a neurosurgeon at the University of Zurich. “By eliminating any physical penetration into the brain, we hope to duplicate the therapeutic effects of invasive deep brain ablation without the side effects, and for a wider group of patients.”

The preliminary results in these patients are consistent with conventional therapy - radiofrequency ablation - which is an invasive procedure and involves making an incision in the scalp, drilling a hole in the skull, inserting an electrode through normal brain tissue into the thalamus, and using radiofrequency to create the lesion.

“This research demonstrates that transcranial MR-guided focused ultrasound can be used non-invasively to produce small thermal ablations with extreme precision and accuracy deep in the brain,” comments Neal Kassell, M.D., a neurosurgeon at the University of Virginia, and Chairman of the Focused Ultrasound Surgery Foundation. “It paves the way for further research into the treatment of a variety of other brain disorders, including Parkinson's disease and essential tremor, epilepsy, brain tumors and stroke,”

According to Dr Kassell, the key advantage of focused ultrasound is that it is non-invasive. This in principle makes it safer than conventional surgery because it avoids the associated risks of complications such as infection, hemorrhage, and collateral damage to normal brain structures.

The study was partially funded by the Focused Ultrasound Surgery Foundation. The Foundation funds translational and clinical research into new therapeutic applications of MR-guided focused ultrasound (MRgFUS).


Story Source:

The above story is based on materials provided by Focused Ultrasound Surgery Foundation & Fibroid Relief. Note: Materials may be edited for content and length.


Cite This Page:

Focused Ultrasound Surgery Foundation & Fibroid Relief. "Non-invasive Brain Surgery Moves A Step Closer." ScienceDaily. ScienceDaily, 19 August 2009. <www.sciencedaily.com/releases/2009/08/090807165836.htm>.
Focused Ultrasound Surgery Foundation & Fibroid Relief. (2009, August 19). Non-invasive Brain Surgery Moves A Step Closer. ScienceDaily. Retrieved October 25, 2014 from www.sciencedaily.com/releases/2009/08/090807165836.htm
Focused Ultrasound Surgery Foundation & Fibroid Relief. "Non-invasive Brain Surgery Moves A Step Closer." ScienceDaily. www.sciencedaily.com/releases/2009/08/090807165836.htm (accessed October 25, 2014).

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