Abstract
Objectives
This study aimed to investigate the association between dilation and proliferation and anastomosis of perforating arteries, and intracranial hemorrhage in moyamoya disease (MMD) patients, using high-resolution magnetic resonance imaging (HRMRI).
Methods
Adult patients with MMD at advanced stages were prospectively enrolled and underwent HRMRI exams. Dilation and proliferation of the lenticulostriate artery (LSA), medullary artery, and anterior or posterior choroidal arteries (AChA or PChA) were assessed. Abnormal anastomoses were identified between (1) the LSA and the medullary or insular arteries; (2) the thalamo-geniculate, thalamo-tuberal, or thalamo-perforating arteries and the medullary or insular arteries; and (3) the AChA or PChA and the medullary or insular arteries. The association between these variables and hemorrhagic events was calculated using univariate and multivariate analyses.
Results
Fifty patients (14 men; mean age, 35.4 ± 9.7 years) were finally analyzed, including 17 hemorrhagic patients and 33 non-hemorrhagic patients. The inter-rater agreement for the qualitative evaluation of perforating arteries was good. Dilation and proliferation of the AChA or PChA (88.2% versus 54.5%, p = 0.027), and choroidal anastomosis (64.7% versus 18.2%, p = 0.002) were more frequently observed in patients with hemorrhage. Multivariate logistic regression showed that choroidal anastomosis remained significantly associated with hemorrhage (odds ratio = 5.95, 95% confidence interval = 1.21–29.25, p = 0.028).
Conclusions
Choroidal anastomosis is independently associated with hemorrhagic events in adult patients with MMD at advanced stages. HRMRI can provide detailed information on both the anatomies and abnormal collaterals in MMD, which facilitates risk estimates of bleeding in MMD.
Key Points
• High-resolution magnetic resonance imaging allows for the evaluation of perforating arteries in patients with moyamoya disease.
• Choroidal anastomosis is associated with hemorrhagic events in patients with moyamoya disease.
• High-resolution magnetic resonance imaging might facilitate further grading and classification of moyamoya vessels.
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Abbreviations
- 3D:
-
Three-dimensional
- 3 T:
-
3 Tesla
- AChA:
-
Anterior choroidal artery
- CI:
-
Confidence interval
- CT:
-
Computed tomography
- DSA:
-
Digital subtraction angiography
- DWI:
-
Diffusion-weighted imaging
- HRMRI:
-
High-resolution magnetic resonance imaging
- IR:
-
Inversion recovery
- LSA:
-
Lenticulostriate artery
- MCA:
-
Middle cerebral artery
- MMD:
-
Moyamoya disease
- OR:
-
Odds ratio
- PChA:
-
Posterior choroidal artery
- SPACE:
-
Sampling Perfection with Application-optimized Contrast using different flip angle Evolutions
- SWI:
-
Susceptibility-weighted imaging
- TOF-MRA:
-
Time-of-flight magnetic resonance angiography
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Funding
This study has received funding by the Funds for International Cooperation and Exchange of the National Natural Science Foundation of China (81961128030), Beijing Talent Training (2018000020124G147), Beijing Nova Program Foundation (Z181100006218108), and the Beijing Natural Science Foundation (L172043).
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The scientific guarantor of this publication is Qi Yang.
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The authors of this manuscript declare no relationships with any companies, whose products or services may be related to the subject matter of the article.
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No complex statistical methods were necessary for this paper.
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Written informed consent was obtained from all subjects (patients) in this study.
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Institutional Review Board approval was obtained.
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• prospective
• cross-sectional study/diagnostic or prognostic study/observational
• performed at one institution
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Wu, F., Han, C., Liu, Y. et al. Validation of choroidal anastomosis on high-resolution magnetic resonance imaging as an imaging biomarker in hemorrhagic moyamoya disease. Eur Radiol 31, 4548–4556 (2021). https://doi.org/10.1007/s00330-020-07479-0
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DOI: https://doi.org/10.1007/s00330-020-07479-0