Abstract
Objectives
To evaluate the diagnostic performance of 1.5-T non-contrast MR coronary angiography (MRCA) for detection of coronary artery disease (CAD) using whole-heart imaging combined with volume-targeted imaging.
Methods
Forty-five patients scheduled for conventional coronary angiography (CAG) underwent 1.5-T free-breathing non-contrast steady-state free-precession MRCA, including whole-heart and subsequent three-vessel volume-targeted imaging. Coronary stenosis was evaluated as follows: (1) by whole-heart MRCA alone; (2) by combined MRCA (whole-heart plus volume-targeted images). The diagnostic performance for significant stenosis (≥ 50% diameter reduction) was evaluated and compared using CAG as a reference standard.
Results
Combined MRCA was completed in all 45 patients with a total acquisition time of 16.6 ± 3.3 min. The sensitivity, specificity, and accuracy of combined MRCA per patient were 97% (95% confidence interval 84–100%), 83% (52–98%), and 93% (82–98%), respectively. The areas under the receiver operating characteristic curve of combined MRCA were significantly higher than those of whole-heart MRCA on a per patient (0.97 versus 0.85, p = 0.0078) and per vessel (0.96 versus 0.86, p < 0.0001) basis. Compared with whole-heart MRCA, combined MRCA showed equally high sensitivity but significantly improved specificity on a per patient (83% versus 25%, p = 0.016) and per vessel (85% versus 50%, p < 0.0001) basis.
Conclusions
1.5-T non-contrast MRCA combining whole-heart and volume-targeted imaging can detect significant CAD with high sensitivity and moderate specificity. Combined MRCA significantly improves specificity compared with whole-heart imaging alone.
Key Points
• 1.5-T non-contrast MRCA with combined whole-heart and volume-targeted imaging can detect CAD with high sensitivity and moderate specificity comparable with coronary CTA.
• Compared with whole-heart imaging alone, combined imaging provides improved diagnostic accuracy, especially specificity.
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Abbreviations
- AUC:
-
Area under the ROC curve
- CABG:
-
Coronary artery bypass graft
- CAD:
-
Coronary artery disease
- CAG:
-
Conventional coronary angiography
- CI:
-
Confidence intervals
- CTA:
-
CT angiography
- CTO:
-
Chronic total occlusion
- FH:
-
Feet-to-head
- LAD:
-
Left anterior descending
- LCX:
-
Left circumflex
- MIP:
-
Maximum intensity projection
- MRCA:
-
MR coronary angiography
- NPV:
-
Negative predictive value
- PPV:
-
Positive predictive value
- RCA:
-
Right coronary artery
- RL:
-
Right-left
- ROC:
-
Receiver operating characteristic
- SPIR:
-
Spectral presaturation with inversion recovery
- SSFP:
-
Steady-state free-precession
- VR:
-
Volume rendering
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Funding
This work was supported by the National Natural Science Foundation of China (Grant No. 81873891, for Yi-Ning Wang), the National Key R&D Program during the 13th Five-Year period (Grant No. 2016YFC1300402, for Yi-Ning Wang and Zheng-Yu Jin), the Non-profit Central Research Institute Fund of the Chinese Academy of Medical Sciences (Grant No. 2018RC320004, for Yi-Ning Wang), and the Fundamental Research Funds for the Central Universities of the Peking Union Medical College (Grant No. 3332020008, for Lu Lin).
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The scientific guarantor of this publication is Zheng-Yu Jin.
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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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The study was approved by the Institutional Review Board of Peking Union Medical College Hospital, Beijing, China.
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Written informed consent was obtained from all patients in this study.
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• prospective
• diagnostic study
• performed at one institution
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Yining Wang is the first corresponding author and Zheng-Yu Jin is the second corresponding author of this work.
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Lin, L., Wang, L., Zhang, XN. et al. A clinical strategy to improve the diagnostic accuracy of 1.5-T non-contrast MR coronary angiography for detection of coronary artery disease: combination of whole-heart and volume-targeted imaging. Eur Radiol 31, 1894–1904 (2021). https://doi.org/10.1007/s00330-020-07135-7
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DOI: https://doi.org/10.1007/s00330-020-07135-7