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Basilar Artery Plaque and Pontine Infarction Location and Vascular Geometry

Title
Basilar Artery Plaque and Pontine Infarction Location and Vascular Geometry
Author
고성호
Keywords
Brain stem infarctions; Basilar artery; Plaque, atherosclerotic; Hemodynamics; Magnetic resonance angiography
Issue Date
2018-01
Publisher
KOREAN STROKE SOC
Citation
JOURNAL OF STROKE, v. 20, no. 1, page. 92-98
Abstract
Background and Purpose Subclinical atherosclerotic plaques are common in patients with pontine infarctions (PIs) but without basilar artery (BA) stenosis. We hypothesized that BA plaque locations may differ by PI type and vertical location as well as vertebrobasilar artery geometry.Methods Ninety-six patients with PI but without BA stenosis on magnetic resonance imaging (MRI) and magnetic resonance angiography were enrolled. PIs were classified by type (paramedian, deep, or lateral) and vertical location (rostral, middle, or caudal). Patients underwent highresolution MRI to evaluate BA plaque location (anterior, posterior, or lateral). The mid-BA angle on anteroposterior view and angle between the BA and dominant vertebral artery (BA-VA angle) on lateral view were measured.Results The PIs were paramedian (72.9%), deep (17.7%), and lateral (9.4%) type with a rostral (32.3%), middle (42.7%), and caudal (25.0%) vertical location. The BA plaque locations differed by PI type (P=0.03) and vertical location (P<0.001); BA plaques were most frequent at the posterior wall in paramedian (37.1%) and caudal (58.3%) PIs and at the lateral wall in lateral (55.5%) and middle (34.1%) PIs. The BA-VA and mid-BA angles differed by BA plaque and PI vertical location; the greatest BA-VA angle was observed in patients with posterior plaques (P<0.001) and caudal PIs (P<0.001). Greatest mid-BA angles were observed with lateral BA plaques (P=0.03) and middlelocated PIs (P=0.03).Conclusions Greater mid-BA angulation may enhance lateral plaque formation, causing lateral and middle PIs, whereas greater BA-VA angulation may enhance posterior plaque formation, causing paramedian or caudal PIs.
URI
https://www.j-stroke.org/journal/view.php?doi=10.5853/jos.2017.00829http://repository.hanyang.ac.kr/handle/20.500.11754/116923
ISSN
2287-6391; 2287-6405
DOI
10.5853/jos.2017.00829
Appears in Collections:
COLLEGE OF MEDICINE[S](의과대학) > MEDICINE(의학과) > Articles
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