Magnetic resonance spectroscopy might help differentiate normal and pure tumors from pure necrosis, but more research is needed to determine the technique that offers the highest sensitivity, specificity and accuracy for distinguishing recurrent tumor and radiation necrosis resulting from radiation treatment in patients with brain neoplasm, a researcher said. "Future investigations should be focused on trying to determine if MR spectroscopy alone can be the tool that is needed or if the technique should be used only in combination with other radiologic methods," the researcher said.

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