Clinical Application of Magnetic Resonance Spectroscopy in Diagnosis of Intracranial Mass Lesions

Figure 5

(a) TE 31 msec. (b) TE 144 msec. MRS was performed to differentiate between high-grade and low-grade glioma. The lesion was diagnosed as a high-grade glioma. NAA is decreased. Lipid and lactate are increased. Choline is markedly elevated. Cho : Cr ratio is 2.93, and Cho : NAA ratio is 2.44. At TE31, myo-inositol is reduced. Myo-inositol decrease has been associated with high-grade gliomas (58).

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