http://www.appliedradiology.com RSS Feed on Applied Radiologyhttp://www.appliedradiology.com//Issues/2005/01/Supplements/Frontiers-of-cerebral-perfusion-magnetic-resonance-imaging.aspxImaging of cerebral hemodynamics is valuable for clinical management of many brain disorders. Magnetic resonance imaging (MRI) is a widespread diagnostic modality, and attempts to extend its ability to measure hemodynamic parameters accurately and quantitatively are ongoing. Dynamic susceptibility contrast (bolus perfusion-weighted imaging) and noncontrast arterial spin labeling (ASL) methods are 2 common MRI perfusion techniques, and significant improvements in quantitation have been recently described. Arterial-spin-labeling–based regional perfusion territory imaging, a completely new modality, promises a unique view of vascular flow patterns. Finally, exciting new experimental hemodynamic techniques using H217O and hyperpolarized 13C may have great long-term impact. From methods in everyday clinical use to cutting-edge research techniques, perfusion MRI is advancing on many fronts.Friday, 21 Jan 2005 15:47:47 GMT