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Fig. 1A. —50-year-old man with purulent ventriculitis after resection of cerebellar hemangioblastoma and ventricular shunt placement. Fluid-attenuated inversion recovery image (TR/TE, 9000/105; inversion time, 2500 msec) shows ventricular debris in dependent part of occipital horns (straight arrows) has higher signal intensity than cerebrospinal fluid in nondependent parts of lateral ventricles. Hyperintense signal around ventricles (curved arrow) is consistent with ependymitis and periventricular inflammation.