Comparison of Intravoxel Incoherent Motion Diffusion-Weighted MR Imaging and Arterial Spin Labeling MR Imaging in Gliomas

Figure 2

Female, aged 43 years with a glioblastoma of the right parietal lobe (WHO IV). The axial T2-weighted image (a) shows the medium signal thick walled mass with a hyperintense central cystic necrosis and peritumoral edema. Enhanced T1-weighted images (b) show the significantly enhanced tumor wall. CBF map (c) shows that the wall of the mass with unevenly high perfusion; the TBF and CBF of contralateral semioval center were 89.90 and 16.89 mL/100 g/min, respectively. The map (d) demonstrates the increased fast diffusion values in the tumor tissue and shows good agreement with the CBF map in the area of high perfusion tumor tissue and low perfusion peritumoral edema. The map (e) demonstrates the gadolinium enhancing region of the tumor and exhibits the edge of the tumor more clearly. The map (f) fails to delineate the tumor clearly but better describes the scope of peritumoral edema. The ADC map (g) was similar to the map in showing the tumor. The , , , and ADC value of the tumor and the contralateral semioval center were , 3.01, 2.37 × 10⁻³ mm²/s; , 0.61, 0.36 × 10⁻³ mm²/s; ADC, 0.779, 0.456 × 10⁻³ mm²/s; , 0.42, 0.26. The logarithmic plot of signal intensity decays as a function of with a corresponding biexponential fit (h): the mass (arrow and solid circles) and contralateral semioval center (arrow head and hollow circles).

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