NPH on T2-weighted fast spin-echo, axial images.

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NPH on T2-weighted fast spin-echo, axial images. NPH on T2-weighted fast spin-echo, axial images. A, A section through the centrum semiovale demonstrates deep white matter ischemia. B, A section through third ventricle shows loss of the waist due to slight enlargement with minimal CSF flow void. C and D, Sections through the aqueduct and upper fourth ventricle show CSF flow void. Although less conspicuous than in the past by using conventional spin-echo, the CSF flow void sign is now more specific for hyperdynamic flow, albeit less sensitive. W.G. Bradley, Jr AJNR Am J Neuroradiol 2015;36:831-838 ©2015 by American Society of Neuroradiology