Magnetic resonance spectroscopy is a new technique that may be helpful in both diagnosing brain tumors in children and during follow-up investigations. This technique is able to distinguish between malignant tumors and areas of necrosis by comparing creatine/choline ratios with N-acetyl aspartate/choline ratios. This technique in combination with tumor characteristics as identified by MRI, tumor site, and other patient characteristics may be able to more accurately predict the tumor type preop-eratively. In addition, it may be helpful in identifying postoperatively residual tumor from postoperative changes.
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