Figure 1: Axial postcontrast T1-weighted image demonstrating two parenchymal metastases (arrows) in the left temporal and occipital lobe (a). Diffusion-weighted image reveals restricted diffusion in this region (b, arrow), and a lack of abnormal contrast enhancement is noted at the same level postcontrast image (c). Arterial spin labeling MR perfusion – cerebral blood flow maps (d-f) reveal definite hyperperfusion in the left parietooccipital cortex (d-f, long arrow), ipsilateral posterior thalamus (e, short arrow), and hippocampus (f, short arrows). Furthermore, note subtle cortical hyperperfusion in the whole left hemisphere (d, short arrows). MR: Magnetic resonance