J Neuroradiology
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This prospective study aimed to evaluate the use of three-dimensional sampling perfection with application-optimized contrasts using different flip-angle evolutions (3D-SPACE) in the diagnosis of spontaneous third ventriculostomy (STV) and to compare it with phase-contrast cine magnetic resonance imaging (PC-MRI). ⋯ 3D-SPACE can provide morphological-physiological information for the evaluation of STV with no need for additional PC-MRI analysis or other sequences. As a non-invasive test, it can also be included among the first line of choices of MRI sequences for patients with obstructive hydrocephalus.
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Case Reports
Management of brain AVM procedural hemorrhagic complication by the "security" catheter technique.
Since the introduction of Onyx as a liquid embolic agent for the treatment of brain arteriovenous malformation (AVM), higher endovascular cure rates have been achieved. This may be partially attributed to its non-adhesive property, which allows longer intranidal progression of the embolic agent before solidification. However, Onyx reflux around the microcatheter can form a highly viscous plug, thereby constraining the microcatheter during its retrieval. ⋯ This report describes a new treatment strategy for the rapid management of such a complication. The technique consists of the placement of a second microcatheter about 2 cm proximal to the AVM nidus in the same artery containing the intranidal microcatheter. After conclusion of embolization, if rupture occurs during intranidal microcatheter retrieval, the second microcatheter that is already in place can promptly be used to control the bleeding.