Abstract #1412

Halbach V, Dowd C, McDermott M, Higashida R, Cha S, Saloner D, Martin A

Selective intra-arterial injection of dilute MR contrast media is used to assess the vascular bed of meningeal tumors prior to and following embolization therapy. MR is an excellent means of assessing the vascular bed of feeding arteries and clearly demonstrated the treated and untreated portion of the neoplasm following therapy. Very low contrast dose is necessary, making repeated assessment during therapy practical. MR appears to be more sensitive than conventional x-ray angiographic techniques for depicting tissue fed by a selected vessel, and has the additional advantage of providing a volumetric assessment.