Abstract
Objectives
We applied a fully automated pixel-wise post-processing framework to evaluate fully quantitative cardiovascular magnetic resonance myocardial perfusion imaging (CMR-MPI). In addition, we aimed to evaluate the additive value of coronary magnetic resonance angiography (CMRA) to the diagnostic performance of fully automated pixel-wise quantitative CMR-MPI for detecting hemodynamically significant coronary artery disease (CAD).
Methods
A total of 109 patients with suspected CAD were prospectively enrolled and underwent stress and rest CMR-MPI, CMRA, invasive coronary angiography (ICA), and fractional flow reserve (FFR). CMRA was acquired between stress and rest CMR-MPI acquisition, without any additional contrast agent. Finally, CMR-MPI quantification was analyzed by a fully automated pixel-wise post-processing framework.
Results
Of the 109 patients, 42 patients had hemodynamically significant CAD (FFR ≤ 0.80 or luminal stenosis ≥ 90% on ICA) and 67 patients had hemodynamically non-significant CAD (FFR ˃ 0.80 or luminal stenosis < 30% on ICA) were enrolled. On the per-territory analysis, patients with hemodynamically significant CAD had higher myocardial blood flow (MBF) at rest, lower MBF under stress, and lower myocardial perfusion reserve (MPR) than patients with hemodynamically non-significant CAD (p < 0.001). The area under the receiver operating characteristic curve of MPR (0.93) was significantly larger than those of stress and rest MBF, visual assessment of CMR-MPI, and CMRA (p < 0.05), but similar to that of the integration of CMR-MPI with CMRA (0.90).
Conclusions
Fully automated pixel-wise quantitative CMR-MPI can accurately detect hemodynamically significant CAD, but the integration of CMRA obtained between stress and rest CMR-MPI acquisition did not provide significantly additive value.
Key Points
• Full quantification of stress and rest cardiovascular magnetic resonance myocardial perfusion imaging can be postprocessed fully automatically, generating pixel-wise myocardial blood flow (MBF) and myocardial perfusion reserve (MPR) maps.
• Fully quantitative MPR provided higher diagnostic performance for detecting hemodynamically significant coronary artery disease, compared with stress and rest MBF, qualitative assessment, and coronary magnetic resonance angiography (CMRA).
• The integration of CMRA and MPR did not significantly improve the diagnostic performance of MPR alone.
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Abbreviations
- CAD:
-
Coronary artery disease
- CMD:
-
Coronary microvascular dysfunction
- CMRA:
-
Coronary magnetic resonance angiography
- CMR-MPI:
-
Cardiovascular magnetic resonance myocardial perfusion imaging
- FFR:
-
Fractional flow reserve
- ICA:
-
Invasive coronary angiography
- MBF:
-
Myocardial blood flow
- MPR:
-
Myocardial perfusion reserve
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Funding
This study has received funding from the Shanghai Science and Technology Committee (grant number: 18DZ1930102), the Shanghai Municipal Key Clinical Specialty (grant number: shslczdzk03202), the Science Foundation of Shanghai Municipal Health Commission (grant numbers: 202140291 and 202040349), and the Shanghai Pujiang Program (grant number: 21PJD012).
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The scientific guarantor of this publication is Meng-su Zeng, MD, PhD.
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Two authors (**ao-yue Zhou, Cai-xia Fu) are employees of Siemens. The remaining authors declare no relationships with any companies whose products or services may be related to the subject matter of the article.
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Zhao, Sh., Guo, Wf., Yao, Zf. et al. Fully automated pixel-wise quantitative CMR-myocardial perfusion with CMR-coronary angiography to detect hemodynamically significant coronary artery disease. Eur Radiol 33, 7238–7249 (2023). https://doi.org/10.1007/s00330-023-09689-8
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DOI: https://doi.org/10.1007/s00330-023-09689-8