MR angiography versus CT angiography in the evaluation of neurovascular disease

For the past decade, a major focus of neuroimaging has been the development of noninvasive methods for detecting vascular disease. To resolve the issue of which method, MR angiography or CT angiography, is appropriate for a given neurovascular application in a specified clinical practice setting, researchers in future clinical investigations must compare the results of both procedures, preferably in the same patients and under commonly available technical conditions, in regard to a number of parameters that are evaluated by reviewers experienced in MR angiography and CT angiography. The outcomes of such investigations can then be used as the foundation for higher levels of evidence in justifying the performance of these methods within the guidelines of evidence-based medicine. © RSNA, 2007.