MRI-guided laser probe treats inoperable brain tumors

Washington University neurosurgeons are tackling brain tumors "previously deemed inoperable" at Barnes-Jewish Hospital with a new laser probe.

Washington University neurosurgeons are tackling brain tumors "previously deemed inoperable" at Barnes-Jewish Hospital with a new laser probe, according to Eric C. Leuthardt, MD, assistant professor of neurological surgery and of neurobiology. Previous surgeries coupled with the hard-to-reach location of the tumor made a standard tumor resection surgery impossible, says Leuthardt, who also serves as director of the Center for Innovation in Neuroscience and Technology at Washington University.

The tool is an MRI-guided, high-intensity laser probe that “cooks” cancer cells deep within the brain, while leaving surrounding brain tissue undamaged.

Ralph G. Dacey Jr., MD, chief of neurosurgery at Washington University School of Medicine, and Leuthardt used the new system for the first time last month in a procedure on a patient with a recurrent brain tumor located deep in the brain. The surgeons drilled a small burr hole about the diameter of a pencil through the patient’s skull, and then used MRI scans to guide the thin laser probe through the brain into the tumor.

Once inside the tumor, the laser discharged highly focused energy to “cook” and coagulate cancer cells, killing them. The MRI directed positioning of the laser and monitored in real time the discharge of energy to the tumor so healthy surrounding brain tissue was left undamaged.

The tool, the Monteris AutoLITT, received FDA approval for neurosurgical use in May 2009. Barnes-Jewish Hospital is the third hospital in the United States to have the device.

Source: Washington University Division of Neurological Surgery

Posted by Lee Mather

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