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Quantitative Analysis Using High‐Resolution 3T MRI in Acute Intracranial Artery Dissection
Author(s) -
Jung Seung Chai,
Kim Ho Sung,
Choi ChoongGon,
Kim Sang Joon,
Lee Deok Hee,
Suh Dae Chul,
Kwon Sun U.,
Kang DongWha,
Kim Jong S.
Publication year - 2016
Publication title -
journal of neuroimaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.822
H-Index - 64
eISSN - 1552-6569
pISSN - 1051-2284
DOI - 10.1111/jon.12357
Subject(s) - medicine , digital subtraction angiography , magnetic resonance imaging , anterior cerebral artery , dissection (medical) , radiology , magnetic resonance angiography , angiography , aneurysm , artery , middle cerebral artery , neuroimaging , cerebral arteries , hematoma , cardiology , ischemia , psychiatry
BACKGROUND AND PURPOSE Quantitative measurements, as well as qualitative characterizations, of the vessel walls of the small intracranial arteries became clinically available and reliable beyond the resolution limit of 1.5 T high‐resolution magnetic resonance imaging (HR‐MRI) with the development of 3 T HR‐MRI. We present the quantitative dissection findings of spontaneous and unruptured acute intracranial artery dissection (SID) using 3 T HR‐MRI and investigate the differences between each cerebral artery. METHODS Twenty‐eight lesions (anterior cerebral artery = 6; middle cerebral artery = 4; vertebral artery = 18) from 26 patients (17 male and 9 female patients; mean age = 47 years; age range = 32–74 years) with presumptive diagnoses of SID were included. The diagnosis was determined based on the clinical features, findings on luminal angiography (such as digital subtraction angiography, computed tomography, or magnetic resonance angiography), and HR‐MRI. HR‐MRI was performed within one month from onset. The neuroimaging indices (maximal outer diameter and area, remodeling index and modified remodeling index, and wall thickness and wall area index) of aneurysmal dilatation and the signal intensities of the intramural hematomas were rated using HR‐MRI. The results were compared between each cerebral artery. RESULTS The maximal outer diameter and area, remodeling index and modified remodeling index, and wall thickness index and length were significantly different between anterior and posterior circulation ( P < .05). The mean relative signal intensities of the intramural hematoma showed consistent values, regardless of the cerebral arteries, without significant difference. CONCLUSIONS Neuroimaging indices of aneurysmal dilatation may be adjunctive indicators in the evaluation of SID.