50. Depiction of intracranial vessels on MR angiography

Prevalence of Unruptured Intracranial Aneurysm on MR Angiography

OBJECTIVE To evaluate the prevalence of incidentally found unruptured intracranial aneurysms (UIAs) on the brain MR angiography (MRA) from a community-based general hospital. MATERIALS AND METHODS This was a prospectively collected retrospective study, carried out from January 2004 to December 2004. The subjects included 3049 persons from a community-based hospital in whom MRA was performed a...

Idiopathic ischemic cerebral infarction in childhood: depiction of arterial abnormalities by MR angiography and catheter angiography.

BACKGROUND AND PURPOSE We report our experience with MR imaging, MR angiography, and catheter angiography in children with acute idiopathic cerebral infarction and suggest that catheter angiography may still play an important role in this setting. METHODS During the past 8 years, 18 children with idiopathic cerebral infarction underwent MR imaging and catheter angiography; 17 were also studie...

Quantifying Intracranial Internal Carotid Artery Stenosis on MR Angiography.

BACKGROUND AND PURPOSE Intracranial atherosclerosis is a common cause of ischemic stroke. Intracranial stenosis is most commonly quantified by the Warfarin-Aspirin Symptomatic Intracranial Disease method, which involves calculating a ratio of luminal diameter measurements on conventional angiography. Our purpose was to determine whether a single linear measurement of the narrowest caliber of th...

MR angiography of normal intradural vessels of the thoracolumbar spine.

PURPOSE To identify and describe the normal intradural vessels detected on MR angiograms of the thoracolumbar spine. METHODS Six adult subjects who had clinical evidence of myelopathy, yet normal findings at spinal digital subtraction angiography (DSA), were also studied without and with contrast-enhanced MR imaging and three-dimensional time-of-flight, single-slab MR angiography. Sagittal an...

MR angiography of spinal vascular disease: what about normal vessels?