Unenhanced MRA of the neck may also overestimate the degree of stenosis in more severe dissections, and the anatomic definition of the surrounding structures may be inadequate for treatment planning in some cases depending on the sequences used. Contrast administration can reduce the degree of overestimation of the degree of stenosis in many cases [132]. MRI Head Perfusion With IV Contrast There is no literature to support the use of MRI head perfusion in the surveillance imaging of cervical vascular dissection. MRI Head Without and With IV Contrast There is no relevant literature to support the use of contrast-enhanced MRI of the head in the surveillance imaging of cervical vascular dissection. MRI Head Without IV Contrast There is no literature to support an MRI of the head in the surveillance imaging of cervical vascular dissection. MRI of the head may be useful in the setting of a known dissection in the patient with ongoing or new symptoms to evaluate for new ischemic stroke and complications such as hemorrhagic conversion, mass effect, and herniation or in the exclusion of ICH in the setting of ongoing medical treatment of vascular dissections. MRV Head Without and With IV Contrast There is no relevant literature to support the use of MRV head in the surveillance imaging of cervical vascular dissection. MRV Head Without IV Contrast There is no relevant literature to support the use of MRV head in the surveillance imaging of cervical vascular dissection. US Duplex Doppler Carotid Artery Limited studies have used US in follow-up of known cervical carotid dissection [137]. There is no relevant literature to support the use of US duplex Doppler examination of the carotid in the surveillance imaging of cervical vascular dissection. Cerebrovascular Diseases-Stroke
Cerebrovascular Diseases Stroke and Stroke Related Conditions PCAs. Unenhanced MRA of the neck may also overestimate the degree of stenosis in more severe dissections, and the anatomic definition of the surrounding structures may be inadequate for treatment planning in some cases depending on the sequences used. Contrast administration can reduce the degree of overestimation of the degree of stenosis in many cases [132]. MRI Head Perfusion With IV Contrast There is no literature to support the use of MRI head perfusion in the surveillance imaging of cervical vascular dissection. MRI Head Without and With IV Contrast There is no relevant literature to support the use of contrast-enhanced MRI of the head in the surveillance imaging of cervical vascular dissection. MRI Head Without IV Contrast There is no literature to support an MRI of the head in the surveillance imaging of cervical vascular dissection. MRI of the head may be useful in the setting of a known dissection in the patient with ongoing or new symptoms to evaluate for new ischemic stroke and complications such as hemorrhagic conversion, mass effect, and herniation or in the exclusion of ICH in the setting of ongoing medical treatment of vascular dissections. MRV Head Without and With IV Contrast There is no relevant literature to support the use of MRV head in the surveillance imaging of cervical vascular dissection. MRV Head Without IV Contrast There is no relevant literature to support the use of MRV head in the surveillance imaging of cervical vascular dissection. US Duplex Doppler Carotid Artery Limited studies have used US in follow-up of known cervical carotid dissection [137]. There is no relevant literature to support the use of US duplex Doppler examination of the carotid in the surveillance imaging of cervical vascular dissection. Cerebrovascular Diseases-Stroke