( 3-Tesla MRI in surgical decision-making...)A New Technology for Safe Tumor Surgery,Health

3-Tesla MRI in surgical decision-making minimizes the potential for unsuccessful tumor-removal surgeries by providing a new level of capability to predict surgical// outcomes. A Tesla is a unit of magnet strength. A 3-Tesla is one of the strongest commercially available.

In their report, Mayo physicians describe a case study of five patients. The team used an advanced magnetic resonance imaging (MRI) system performed on a 3-Tesla magnet to help identify suitable candidates for a difficult tumor-removal surgery.

Four had neurofibromatosis, a condition with a predisposition to nerve-related tumors. All patients suffered from growths called ‘sciatic notch dumbbell-shaped’ tumors. The tumors were benign, but resulted in neurologic dysfunction and disabling pain.

With the 3-Tesla MRI images, Mayo Clinic surgeons from three specialties -- neurosurgery, colorectal and orthopedic surgery -- obtained sufficiently detailed pictures of the tumor and nerve relationship before surgery in all five cases to accurately predict which patients would benefit from surgery. In three cases the tumor was predicted to be distinct from the main sciatic nerve, and the tumor was safely removed. All three patients experienced relief from pain and had no recurrent growth one year after surgery. In the other two cases, the tumor was predicted to be so entwined in the nerve that surgery would have damaged the nerve. Those patients did not undergo surgery.

‘In the past, if surgeons couldn't tell prior to surgery where the exact location of the large tumor was in relation to the sciatic nerve, it meant they couldn't predict in which cases surgery could be performed safely,’ explains Robert Spinner, M.D., the lead neurosurgeon on the Mayo Clinic team.

A standardized surgical approach for safe and complete removal of sciatic notch dumbbell-shaped tumors has been problematic for at least three reasons.

These tumors are: relatively
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