Fig 2.

MR imaging study following four cycles of chemotherapy with PCV.

A, Axial T2-weighted image (6000/105.5/2 [TR/TE/NEX]) at the level of the lateral ventricles shows a marked reduction of the insular tumor component with almost complete resolution of the complex cyst.

B, rCBV map of an axial dynamic susceptibility-weighted single shot echo planar sequence (1200/40/1 [TR/TE/NEX]) no longer show any areas of increased rCBV in the residual insular tumor.

C, ADC map of an axial diffusion-weighted image (10,000/93.3 [TR/TE]; b = 1000 s/mm²) at the level of the lateral ventricles shows that the small residual tumor in the insula is no longer hypointense but hyperintense compared with contralateral white matter, with ADC measurements ranging from 1.21 to 1.38 × 10⁻³ mm²/s (mean, 1.30).