Ventriculitis- Diffusion weighted MRI

Usually the most frequent sign of ventriculitis is intraventricular debris and pus. Abnormal periventricular intensities or enhancements are also seen. Both FLAIR and DWI sequences contribute to the diagnosis of ventriculitis. This is a case of an old gentleman with fever, and CSF revealed high WBC count. Diffusion-weighted imaging provides better lesion contrast than FLAIR imaging for the detection of intraventricular debris and pus as in this case.