Idiopathic normal pressure hydrocephalus Imaging [Neurosurgery Wiki]

This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong.
====== Idiopathic normal pressure hydrocephalus Imaging ======


===== CT and MRI =====

[[MRI]] is preferred over CT because it provides more information and does not involve ionizing radiation (X-rays).
Features on CT
((Vassilouthis J. The Syndrome of Normal-Pressure Hydrocephalus. J Neurosurg. 1984; 61:501–509))
and MRI
((Jack CR, Mokri B, Laws ER, et al. MR Findings in Normal Pressure Hydrocephalus: Significance and Comparison with Other Forms of Dementia. J Comput Assist Tomogr. 1987; 11:923–931)):


There remains a lack of consensus about the role of individual imaging modalities in characterizing specific features of the condition and predicting the success of CSF shunting. Variability of clinical presentation and imperfect responsiveness to shunting are obstacles to the application of novel imaging techniques. Few studies have sought to interpret imaging findings in the context of theories of NPH pathogenesis
((Keong NC, Pena A, Price SJ, Czosnyka M, Czosnyka Z, Pickard JD. Imaging normal
pressure hydrocephalus: theories, techniques, and challenges. Neurosurg Focus.
2016 Sep;41(3):E11. doi: 10.3171/2016.7.FOCUS16194. PubMed PMID: 27581307.
)). 

Although attempts at predictive methodology, such as highvelocity aqueductal flow rate measurement on MRI, have achieved widespread acceptance in clinical practice, there is no Class I evidence (only 1 Class II study and 2 Class III studies) available to support this
((Halperin JJ, Kurlan R, Schwalb JM, Cusimano MD, Gronseth
G, Gloss D: Practice guideline: Idiopathic normal pressure
hydrocephalus: Response to shunting and predictors of response:
Report of the Guideline Development, Dissemination,
and Implementation Subcommittee of the American
Academy of Neurology. Neurology 85:2063–2071, 2015)).
===== MRI =====
see [[Idiopathic normal pressure hydrocephalus Magnetic resonance imaging]] 

==== SPECT====

see [[SPECT for idiopathic normal pressure hydrocephalus diagnosis]]