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Egyptian Journal of Radiology and Nuclear Medicine
Fig. 1 | Egyptian Journal of Radiology and Nuclear Medicine

Fig. 1

From: The combined role of MR spectroscopy and perfusion imaging in preoperative differentiation between high- and low-grade gliomas

Fig. 1

A 30-year-old male presented by amnesia, slurred speech and right hemiparesis since 1 month. a Axial T2 showing left tempero-parietal large ill-defined SOL surrounded by moderate vasogenic edema. b T1 post Gd showing faint heterogeneous enhancement. c Intermediate echo spectroscopy curve shows Cho/Cr ratio 3.5, Cho/NAA ratio 6, and elevated lactate and lipid peaks. d Perfusion-weighted images PWI and rCBV color perfusion map for the lesion show marked signal drop of the lesion and area of relative hyper-perfusion rCBV5.8, and for the perilesional edema show no signal drop and area of subtle hyper-perfusion rCBV 1.2. Collectively, the findings are in favor of HGG. Histopathological examination confirmed the diagnosis: diffuse anaplastic astrocytoma WHO GRADE III

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