Abstract
Objectives
Our study sought to explore the prognostic value of radiomic TA (texture analysis) on quantitative ECV (extracellular volume) fraction mapping to differentiate between reversible and irreversible myocardial damage and to predict left ventricular adverse remodeling in patients with reperfused STEMI (ST-elevation myocardial infarction).
Methods
This observational prospective cohort study identified 70 patients (62 ± 9 years, 62 men [85.70%]) with STEMI for TA who consecutively performed native and contrast T1 mapping. Texture features were extracted from each stack of ECV mapping based on ROI (region of interest) analysis.
Results
After texture feature selection and dimension reduction, five selected texture features were found to be statistically significant for differentiating the extent of myocardial injury. ROC (receiver operating characteristic) curve analysis for the differentiation of unsalvageable infarction and salvageable myocardium demonstrated a significantly higher AUC (area under the curve) (0.91 [95% CI, 0.86–0.96], p < 0.0001) for horizontal fraction than other texture features (p < 0.05). LVAR (left ventricular adverse remodeling) was predicted by those selected features. The differences in qualitative and quantitative baseline parameters and horizontal fractions were significant between the patients with and without LVAR. LGE (late gadolinium enhancement) and horizontal fraction features of infarcted myocardium in acute STEMI were the only two parameters selected in forming the optimal overall multivariable model for LVAR at 6 months.
Conclusions
Radiomic analysis of ECV could discriminate reversible from irreversible myocardial injury after STEMI. LGE as well as radiomics TA (texture analysis) of ECV may provide an alternative to predict LVAR and functional recovery.
Key Points
• ECV quantification was able to differentiate between infarcted myocardium and non-infarcted myocardium.
• Radiomics analysis of ECV could discriminate reversible from irreversible myocardial injury.
• Radiomics TA analysis shows a promising similarity with LGE findings which could aid the prognosis of myocardial infarction patients.
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- AAR:
-
Area at risk
- AUC:
-
Areas under the receiver-operating characteristic curves
- BNP:
-
Brain natriuretic peptide
- CMR:
-
Cardiac magnetic resonance
- ECV:
-
Extracellular volume
- Gd-DTPA:
-
Diethylenetriaminepentacetate
- ICC:
-
Intraclass correlation coefficients
- IMH:
-
Intramyocardial hemorrhage
- LGE:
-
Late gadolinium enhancement
- LVAR:
-
Left ventricular adverse remodeling
- LVEDV:
-
Left ventricular end-diastolic volume
- LVEF:
-
Left ventricular ejection fraction
- LVESV:
-
Left ventricular end-systolic volume
- MOLLI:
-
Modified look-locker inversion
- MRI:
-
Magnetic resonance imaging
- MVO:
-
Microvascular obstruction
- PCI:
-
Percutaneous coronary intervention
- ROC:
-
Receiver operating characteristic
- ROC:
-
Receiver operation characteristic
- SSFP:
-
Steady-state free-precession
- STEMI:
-
ST-elevation myocardial infarction
- T2WI-STIR:
-
T2-weighted short-tau triple inversion recovery
- TA:
-
Texture analysis
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Funding
This study is supported by the National Natural Science Foundation of China (No. 81873886 and No. 81873887); Shanghai Municipal Commission of Health and Family Planning Excellent Young Talent Program (No. 2017YQ031); Shanghai Shenkang Hospital Development Center Clinical Research and Cultivation Project (SHDC12018X21); Shanghai Science and Technology Innovation Action Plan, Technology Standard Project (19DZ2203800); Shanghai Jiao Tong University School of Medicine Double Hundred Outstanding Person Project (20191904); and Shanghai Jiao Tong University Medical Cross Project YG2017QN44.
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The scientific guarantor of this publication is Lian-ming Wu.
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Lian-ming Wu kindly provided statistical advice for this manuscript.
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Written informed consent was obtained from all participants in this study.
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• prospective
• observational
• single-center study
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Chen, BH., An, DA., He, J. et al. Myocardial extracellular volume fraction radiomics analysis for differentiation of reversible versus irreversible myocardial damage and prediction of left ventricular adverse remodeling after ST-elevation myocardial infarction. Eur Radiol 31, 504–514 (2021). https://doi.org/10.1007/s00330-020-07117-9
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DOI: https://doi.org/10.1007/s00330-020-07117-9