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Validation of choroidal anastomosis on high-resolution magnetic resonance imaging as an imaging biomarker in hemorrhagic moyamoya disease

  • Magnetic Resonance
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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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Correspondence to Lian Duan or Qi Yang.

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The scientific guarantor of this publication is Qi Yang.

Conflict of interest

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.

Statistics and biometry

No complex statistical methods were necessary for this paper.

Informed consent

Written informed consent was obtained from all subjects (patients) in this study.

Written informed consent was waived by the Institutional Review Board.

Ethical approval

Institutional Review Board approval was obtained.

Methodology

• 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

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