- MR Angiographic–Guided Percutaneous Sclerotherapy for Venous Vascular Malformations: A Radiation Dose-Reduction Strategy
This case series of 5 patients describes the authors' approach to using dynamic MRA with direct puncture of venous malformations to define the angioarchitecture and draining veins in these lesions. MultiHance in a 1:100 dilution with normal saline solution was used for the contrast administration. Precontrast images were used as a mask and were digitally subtracted from the postcontrast images (13- and 51-second acquisitions, respectively). The authors conclude that they have developed a method to completely eliminate digital subtraction angiography x-ray radiation exposure during treatment of venous vascular malformations.
- Flow-Diverter Stents for the Treatment of Saccular Middle Cerebral Artery Bifurcation Aneurysms
Fourteen patients with 15 saccular, nondissecting MCA bifurcation aneurysms were treated with flow-diverter stents and were retrospectively analyzed. Procedure-related morbidity and mortality at last follow-up were 21% and 0%, respectively. Complete occlusion was achieved in 62%. The authors conclude that compared with other therapeutic options, flow-diverter stents do not appear to be suitable for the treatment of saccular MCA bifurcation aneurysms.
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