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A deep learning method for the automated assessment of paradoxical pulsation after myocardial infarction using multicenter cardiac MRI data

  • Cardiac
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Abstract

Objective

The current study aimed to explore a deep convolutional neural network (DCNN) model that integrates multidimensional CMR data to accurately identify LV paradoxical pulsation after reperfusion by primary percutaneous coronary intervention with isolated anterior infarction.

Methods

A total of 401 participants (311 patients and 90 age-matched volunteers) were recruited for this prospective study. The two-dimensional UNet segmentation model of the LV and classification model for identifying paradoxical pulsation were established using the DCNN model. Features of 2- and 3-chamber images were extracted with 2-dimensional (2D) and 3D ResNets with masks generated by a segmentation model. Next, the accuracy of the segmentation model was evaluated using the Dice score and classification model by receiver operating characteristic (ROC) curve and confusion matrix. The areas under the ROC curve (AUCs) of the physicians in training and DCNN models were compared using the DeLong method.

Results

The DCNN model showed that the AUCs for the detection of paradoxical pulsation were 0.97, 0.91, and 0.83 in the training, internal, and external testing cohorts, respectively (p < 0.001). The 2.5-dimensional model established using the end-systolic and end-diastolic images combined with 2-chamber and 3-chamber images was more efficient than the 3D model. The discrimination performance of the DCNN model was better than that of physicians in training (p < 0.05).

Conclusions

Compared to the model trained by 2-chamber or 3-chamber images alone or 3D multiview, our 2.5D multiview model can combine the information of 2-chamber and 3-chamber more efficiently and obtain the highest diagnostic sensitivity.

Clinical relevance statement

A deep convolutional neural network model that integrates 2-chamber and 3-chamber CMR images can identify LV paradoxical pulsation which correlates with LV thrombosis, heart failure, ventricular tachycardia after reperfusion by primary percutaneous coronary intervention with isolated anterior infarction.

Key Points

• The epicardial segmentation model was established using the 2D UNet based on end-diastole 2- and 3-chamber cine images.

• The DCNN model proposed in this study had better performance for discriminating LV paradoxical pulsation accurately and objectively using CMR cine images after anterior AMI compared to the diagnosis of physicians in training.

• The 2.5-dimensional multiview model combined the information of 2- and 3-chamber efficiently and obtained the highest diagnostic sensitivity.

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Abbreviations

2D UNet:

Two-dimensional UNet

AMI:

Acute myocardial infarction

BNPmax :

Peak brain natriuretic peptide

CK-MBmax :

Peak creatinine kinase-MB

CMR:

Cardiac magnetic resonance

CRPmax :

Peak C-creative protein

cTnImax :

Peak troponin I

DCNN:

Deep convolutional neural network

HF:

Heart failure

IMH:

Intramyocardial hemorrhage

LAD:

Left anterior descending

LGE:

Late Gadolinium enhancement

LVEF:

Left ventricular ejection fraction

LVT:

Left ventricular thrombosis

MVO:

Microvascular obstruction

NT-proBNP:

N-terminal pro-brain natriuretic peptide

SSFP:

Steady-state free-precession

T2WI-STIR:

T2-weighted short-tau triple inversion recovery

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Acknowledgements

We are very grateful to the Philips Healthcare team for their support in image analysis and deep learning methods. We appreciate the support of Yan Zhou in providing a research platform for this study. We appreciate Jun Pu and Meng Jiang made a great contribution to the study, mainly including patient recruitment, baseline clinical data collection, diagnosis, and standardized treatment.

Funding

Supported by National Natural Science Foundation of China (No. 81873886, 81873887, and 82171884); National Natural Science Foundation of China Youth project (No. 82101981); Shanghai Science and Technology Innovation Action Plan, Technology Standard Project Grant numbers (No. 19DZ2203800); Shanghai Science and technology innovation action plan, technology standard project (No. 19DZ2203800); Shanghai Municipal Education Commission-Gaofeng Clinical Medicine Grant: Shanghai Jiao Tong University school of medicine Double hundred outstanding person project (No. 20191904); Shanghai Jiao Tong University Medical Engineering Cross Project (No. YG2022QN016).

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Correspondence to ChaoLu Feng, Meng Jiang, Jun Pu or Lian-Ming Wu.

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Guarantor

The scientific guarantor of this publication is Lian-Ming Wu.

Conflict of interest

The authors state that there neither exists a conflict of interest nor that there is financial information to disclose.

Statistics and biometry

Lian-Ming Wu kindly provided statistical advice for this manuscript.

Informed consent

Written informed consent was obtained from all participants in this study.

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Institutional Review Board approval was obtained.

Study subjects or cohorts overlap

Study subjects or cohorts have not been previously reported.

Methodology

• Prospective

• Observational

• Multicentre study

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Chen, BH., Wu, CW., An, DA. et al. A deep learning method for the automated assessment of paradoxical pulsation after myocardial infarction using multicenter cardiac MRI data. Eur Radiol 33, 8477–8487 (2023). https://doi.org/10.1007/s00330-023-09807-6

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  • DOI: https://doi.org/10.1007/s00330-023-09807-6

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