Intra-Arterial MR Perfusion Imaging of Meningiomas: Comparison to Digital Subtraction Angiography and Intravenous MR Perfusion Imaging. oleh Mark A Lum, Alastair J Martin, Matthew D Alexander, David B McCoy, Daniel L Cooke, Prasheel Lillaney, Parham Moftakhar, Matthew R Amans, Fabio Settecase, Andrew Nicholson, Christopher F Dowd, Van V Halbach, Randall T Higashida, Michael W McDermott, David Saloner, Steven W Hetts