Contrast-enhanced MRA outperforms time-of-flight MRA in the evaluation of a treated aneurysm and parent vessel patency with indwelling stent; however, intraluminal detail is limited with both techniques [60]. Newer endovascular devices demonstrate magnetic susceptibility and Faraday cage effects, which limits MRA head utility in assessing for aneurysm thrombosis or parent vessel patency when compared with conventional arteriography [61-63]. MRA Neck There is no relevant literature to support the use of MRA neck in the surveillance of known, treated cerebral aneurysm. MRI Head Perfusion There is no relevant literature to support the use of MRI head perfusion in the surveillance of known, treated cerebral aneurysm. MRI Head There is no relevant literature to support the use of MRI head in the surveillance of known, treated cerebral aneurysm. MRV Head There is no relevant literature to support the use of MRV head in the surveillance of known, treated cerebral aneurysm. US Duplex Doppler Carotid Artery There is no relevant literature to support the use of carotid artery US duplex Doppler in the surveillance of known, treated cerebral aneurysm. US Duplex Doppler Transcranial There is no relevant literature to support the use of TCD in the surveillance of known, treated cerebral aneurysm. CT Head Perfusion There is no relevant literature to support the use of CT head perfusion in the screening of patients at high risk for cerebral aneurysm. CVD-Aneurysm, Vascular Malformation, and SAH CT Head There is no relevant literature to support the use of CT head in the screening of patients at high risk for cerebral aneurysm. CTA Head CTA head is a fast, noninvasive study to evaluate the intracranial vasculature. CTA head has been shown to be >90% sensitive and specific in the evaluation for aneurysms [4,10,13-18].
Cerebrovascular Diseases Aneurysm Vascular Malformation and Subarachnoid Hemorrhage PCAs. Contrast-enhanced MRA outperforms time-of-flight MRA in the evaluation of a treated aneurysm and parent vessel patency with indwelling stent; however, intraluminal detail is limited with both techniques [60]. Newer endovascular devices demonstrate magnetic susceptibility and Faraday cage effects, which limits MRA head utility in assessing for aneurysm thrombosis or parent vessel patency when compared with conventional arteriography [61-63]. MRA Neck There is no relevant literature to support the use of MRA neck in the surveillance of known, treated cerebral aneurysm. MRI Head Perfusion There is no relevant literature to support the use of MRI head perfusion in the surveillance of known, treated cerebral aneurysm. MRI Head There is no relevant literature to support the use of MRI head in the surveillance of known, treated cerebral aneurysm. MRV Head There is no relevant literature to support the use of MRV head in the surveillance of known, treated cerebral aneurysm. US Duplex Doppler Carotid Artery There is no relevant literature to support the use of carotid artery US duplex Doppler in the surveillance of known, treated cerebral aneurysm. US Duplex Doppler Transcranial There is no relevant literature to support the use of TCD in the surveillance of known, treated cerebral aneurysm. CT Head Perfusion There is no relevant literature to support the use of CT head perfusion in the screening of patients at high risk for cerebral aneurysm. CVD-Aneurysm, Vascular Malformation, and SAH CT Head There is no relevant literature to support the use of CT head in the screening of patients at high risk for cerebral aneurysm. CTA Head CTA head is a fast, noninvasive study to evaluate the intracranial vasculature. CTA head has been shown to be >90% sensitive and specific in the evaluation for aneurysms [4,10,13-18].