"post-carotid endarterectomy"
"Ultrasound "
"MRA: vascular narrowings can be seen (see DSA)"
"DWI: watershed infarcts can be seen"
"perfusion/ASL: in the acute phase (≤30 days) there may be reduced global and regional CBF, which normalise by ~2 weeks after headache onset and remain normal in the remission phase (≥90 days); posterior regions show the most marked recovery 23"
"aneurysmal subarachnoid haemorrhage."
"RCVS affects women more commonly than men (F:M = 2.4:1) and usually presents between 20-50 years of age (mean 42 years), although it has also been described in children and adolescents 17. The mean age of presentation in men is a decade younger than the mean age of presentation in women."
"In 2016, a study proposed a set of criteria to diagnose reversible cerebral vasoconstriction syndrome and to distinguish it from primary angiitis of the central nervous system (PACNS) with a specificity of 98-100% and a similarly high PPV 7:"
"Transcranial Doppler may show increased arterial velocities suggesting vasospasm and decreased luminal calibre of ICA, MCA, and ACA 8. Bedside ultrasound has been used for the follow-up of vasospasm 9."
"perfusion/ASL: in the acute phase (≤30 days) there may be reduced global and regional CBF, which normalise by ~2 weeks after headache onset and remain normal in the remission phase (≥90 days); posterior regions show the most marked recovery 23"
"International Headache Society International Classification of Headache Disorders 3 (ICHD-3) criteria 10"
"variable patterns of sulcal enhancement have been described 12"
Expected headings
"Ultrasound "
"Complications"
"Headaches may be associated with photophobia, nausea and vomiting. Focal neurological deficits can occur, secondary to ischaemia or convexity subarachnoid haemorrhage. CSF studies are normal or near normal."
"In a minority of patients, ischaemia and stroke can occur 21."
"perfusion/ASL: in the acute phase (≤30 days) there may be reduced global and regional CBF, which normalise by ~2 weeks after headache onset and remain normal in the remission phase (≥90 days); posterior regions show the most marked recovery 23"
"Vessel wall MRI (VW-MRI) may be a useful adjunct to conventional MRI, allowing differentiation between RCVS, where there is no or mild contrast enhancement of the affected arterial wall, and other causes of vascular narrowing, such as vasculitis, where there is intense contrast enhancement of the affected arterial wall, or intracranial atherosclerotic plaques, which focally demonstrate contrast enhancement 16."
"History and etymology"