Mismatch between TOF MR Angiography and CT Angiography of the Middle Cerebral Artery may be a Critical Sign in Cerebrovascular Dynamics
- Author:
Keiji IGASE
1
;
Michiya IGASE
;
Ichiro MATSUBARA
;
Kazuhiko SADAMOTO
Author Information
- Publication Type:Original Article
- Keywords: Signal loss; TOF-MRA; occlusion; cerebral artery; cerebral blood flow
- MeSH: Acetazolamide/administration & dosage; Aged; Aged, 80 and over; Carotid Artery, Internal/physiopathology; Cerebrovascular Circulation; Computed Tomography Angiography; Female; Humans; Magnetic Resonance Angiography; Male; Middle Aged; Middle Cerebral Artery/diagnostic imaging
- From:Yonsei Medical Journal 2018;59(1):80-84
- CountryRepublic of Korea
- Language:English
- Abstract: PURPOSE: Although time-of-flight (TOF)-magnetic resonance angiography (MRA) can clearly depict intracranial arteries, the arterial flow of middle cerebral artery (MCA) is occasionally not detected. We evaluated this phenomenon with reference to cerebrovascular dynamics. MATERIALS AND METHODS: Seventeen patients with suspected occlusion of MCA or internal carotid artery on TOF-MRA were enrolled. All patients underwent CT angiography (CTA) and quantitative cerebral blood flow (CBF) examination for measurement of resting CBF and cerebrovascular reactivity (CVR). Depending on appearance, patients were categorized into three groups. Group A (n=6) had MCA delineation on both MRA and CTA, while groups B (n=6) and C (n=5) had no signal on MRA, but Group B had a MCA delineation on CTA.
