MRI perfusion of the head may be useful in evaluating for secondary etiologies such as hyperperfusion associated with carotid revascularization, tumors, prior ischemic strokes, arteriovenous shunt lesions, or other cerebrovascular malformations, particularly if clinically suspected or suggested on prior imaging. Recommendations for imaging in the setting of suspected aneurysm, arteriovenous shunt lesion, or MRI Head Without and With IV Contrast MRI of the head is a useful test for evaluating alternative etiologies in patients <55 years of age who do not have typical hypertensive hemorrhage [96]. MRI without and with IV contrast can be useful in evaluating for cerebral amyloid angiopathy, tumor, vasculitis, dural venous sinus thrombosis, vascular shunt lesions, and in further characterizing other etiologies seen on noncontrast imaging [97,98]. MRI Head Without IV Contrast MRI of the head is a useful test for evaluating alternative etiologies when the diagnosis of hypertensive hemorrhage is in doubt. Noncontrast MRI can exclude stroke and may suggest certain etiologies including cerebral amyloid angiopathy and cavernous malformations [97,98]. MRV Head Without and With IV Contrast In the setting of typical hypertensive hemorrhage, there is no relevant literature to support MRV of the head. However, MRV of the head may be useful to exclude CVT as an etiology, particularly if suggested by features of hemorrhage on initial CT imaging or the diagnosis is in doubt based on contrast-enhanced MRI. MRV Head Without IV Contrast In the setting of typical hypertensive hemorrhage, there is no relevant literature to support MRV of the head. However, MRV of the head may be useful to exclude CVT as an etiology, particularly if suggested by features of hemorrhage on initial CT imaging or the diagnosis is in doubt based on contrast-enhanced MRI.
Cerebrovascular Diseases Stroke and Stroke Related Conditions PCAs. MRI perfusion of the head may be useful in evaluating for secondary etiologies such as hyperperfusion associated with carotid revascularization, tumors, prior ischemic strokes, arteriovenous shunt lesions, or other cerebrovascular malformations, particularly if clinically suspected or suggested on prior imaging. Recommendations for imaging in the setting of suspected aneurysm, arteriovenous shunt lesion, or MRI Head Without and With IV Contrast MRI of the head is a useful test for evaluating alternative etiologies in patients <55 years of age who do not have typical hypertensive hemorrhage [96]. MRI without and with IV contrast can be useful in evaluating for cerebral amyloid angiopathy, tumor, vasculitis, dural venous sinus thrombosis, vascular shunt lesions, and in further characterizing other etiologies seen on noncontrast imaging [97,98]. MRI Head Without IV Contrast MRI of the head is a useful test for evaluating alternative etiologies when the diagnosis of hypertensive hemorrhage is in doubt. Noncontrast MRI can exclude stroke and may suggest certain etiologies including cerebral amyloid angiopathy and cavernous malformations [97,98]. MRV Head Without and With IV Contrast In the setting of typical hypertensive hemorrhage, there is no relevant literature to support MRV of the head. However, MRV of the head may be useful to exclude CVT as an etiology, particularly if suggested by features of hemorrhage on initial CT imaging or the diagnosis is in doubt based on contrast-enhanced MRI. MRV Head Without IV Contrast In the setting of typical hypertensive hemorrhage, there is no relevant literature to support MRV of the head. However, MRV of the head may be useful to exclude CVT as an etiology, particularly if suggested by features of hemorrhage on initial CT imaging or the diagnosis is in doubt based on contrast-enhanced MRI.