| Title | Estimating critical values from electrocardiogram using a deep ordinal convolutional neural network |
| Authors | Wei, Guodong Di, Xinxin Zhang, Wenrui Geng, Shijia Zhang, Deyun Wang, Kai Fu, Zhaoji Hong, Shenda |
| Affiliation | HeartVoice Med Technol, Hefei 230027, Peoples R China Univ Sci & Technol China, Affiliated Hosp 1, Dept Electrocardiogram, Div Life Sci & Med,USTC, Hefei 230001, Peoples R China Natl Univ Singapore, Dept Math, Singapore 119077, Singapore Univ Sci & Technol China, Sch Management, Hefei 230026, Peoples R China Peking Univ, Natl Inst Hlth Data Sci, Beijing 100191, Peoples R China Peking Univ, Inst Med Technol, Hlth Sci Ctr, Beijing 100191, Peoples R China |
| Keywords | AUTOMATED DETECTION |
| Issue Date | 16-Nov-2022 |
| Publisher | BMC MEDICAL INFORMATICS AND DECISION MAKING |
| Abstract | Background Critical values are commonly used in clinical laboratory tests to define health-related conditions of varying degrees. Knowing the values, people can quickly become aware of health risks, and the health professionals can take immediate actions and save lives. Methods In this paper, we propose a method that extends the concept of critical value to one of the most commonly used physiological signals in the clinical environment-Electrocardiogram (ECG). We first construct a mapping from common ECG diagnostic conclusions to critical values. After that, we build a 61-layer deep convolutional neural network named CardioV, which is characterized by an ordinal classifier. Results We conduct experiments on a large public ECG dataset, and demonstrate that CardioV achieves a mean absolute error of 0.4984 and a ROC-AUC score of 0.8735. In addition, we find that the model performs better for extreme critical values and the younger age group, while gender does not affect the performance. The ablation study confirms that the ordinal classification mechanism suits for estimating the critical values which contain ranking information. Moreover, model interpretation techniques help us discover that CardioV focuses on the characteristic ECG locations during the critical value estimation process. Conclusions As an ordinal classifier, CardioV performs well in estimating ECG critical values that can help people quickly identify different heart conditions. We obtain ROC-AUC scores above 0.8 for all four critical value categories, and find that the extreme values (0 (no risk) and 3 (high risk)) have better model performance than the other two (1 (low risk) and 2 (medium risk)). Results also show that gender does not affect the performance, and the older age group has worse performance than the younger age group. In addition, visualization techniques reveal that the model pays more attention to characteristic ECG locations. |
| URI | http://hdl.handle.net/20.500.11897/659176 |
| DOI | 10.1186/s12911-022-02035-w |
| Indexed | SCI(E) |
| Appears in Collections: | 医学部待认领 |
