PT  - JOURNAL ARTICLE
AU  - Stoquart-El Sankari, S.
AU  - Lehmann, P.
AU  - Gondry-Jouet, C.
AU  - Fichten, A.
AU  - Godefroy, O.
AU  - Meyer, M.-E.
AU  - Baledent, O.
TI  - Phase-Contrast MR Imaging Support for the Diagnosis of Aqueductal Stenosis
AID  - 10.3174/ajnr.A1308
DP  - 2009 Jan 01
TA  - American Journal of Neuroradiology
PG  - 209--214
VI  - 30
IP  - 1
4099  - http://www.ajnr.org/content/30/1/209.short
4100  - http://www.ajnr.org/content/30/1/209.full
SO  - Am. J. Neuroradiol.2009 Jan 01; 30
AB  - BACKGROUND AND PURPOSE: Patients with aqueductal stenosis (AS) present with various clinical and radiologic features. Conventional MR imaging provides useful information in AS but depends on a subjective evaluation by the neuroradiologist. The purpose of this study was to evaluate the support of the phase-contrast MR imaging (PC-MR imaging) technique (sensitive to CSF flows) for the diagnosis of AS.MATERIALS AND METHODS: We retrospectively considered 17 patients who underwent PC-MR imaging to explore hydrocephalus, with the absence of CSF flow at the aqueductal level. We analyzed their clinical and morphologic MR imaging data.RESULTS: None of the usually reported direct or indirect signs of aqueductal obstruction were seen in 7 patients in whom the clinical suggestion of AS was confirmed by PC-MR imaging results. Seven patients in this population had a third ventriculostomy, and 5 of them were among those in whom conventional MR imaging failed to reveal signs of aqueductal obstruction. All of these 7 patients had a positive postsurgical outcomes. The analysis of CSF and vascular dynamic data in this population was compared with an aged-matched population, and these data were found similar except for the fourth ventricular CSF flush flow latency.CONCLUSIONS: PC-MR imaging supports the diagnosis of CSF flow blockage at the aqueductal level in a reliable, reproducible, and rapid way, which aids in the diagnosis of AS in patients with clinical and/or radiologic suggestion of obstructive hydrocephalus. We, therefore, suggest using this technique in the current evaluation of hydrocephalus.