Multimodal deep learning models incorporating CTPA features, clinical data, and PESI scores achieved higher concordance indices for predicting pulmonary embolism survival than PESI alone.
Observational (n=918)
Yes
Do multimodal deep learning models incorporating CTPA features, clinical data, and PESI score improve survival prediction compared to PESI score alone in patients with pulmonary embolism?
Multimodal deep learning models combining CTPA imaging features, clinical data, and PESI scores improve survival prediction and risk stratification in patients with pulmonary embolism compared to the PESI score alone.
p-value: p=<0.001
PURPOSE: Pulmonary embolism (PE) is a significant cause of mortality in the United States. The objective of this study is to implement deep learning (DL) models using computed tomography pulmonary angiography (CTPA), clinical data, and PE Severity Index (PESI) scores to predict PE survival. MATERIALS AND METHODS: In total, 918 patients (median age 64 y, range 13 to 99 y, 48% male) with 3978 CTPAs were identified via retrospective review across 3 institutions. To predict survival, an AI model was used to extract disease-related imaging features from CTPAs. Imaging features and clinical variables were then incorporated into independent DL models to predict survival outcomes. Cross-modal fusion CoxPH models were used to develop multimodal models from combinations of DL models and calculated PESI scores. Five multimodal models were developed as follows: (1) using CTPA imaging features only, (2) using clinical variables only, (3) using both CTPA and clinical variables, (4) using CTPA and PESI score, and (5) using CTPA, clinical variables, and PESI score. Performance was evaluated using the concordance index (c-index). Kaplan-Meier analysis was performed to stratify patients into high-risk and low-risk groups. Additional factor-risk analysis was conducted to account for right ventricular (RV) dysfunction. RESULTS: For both data sets, the multimodal models incorporating CTPA features, clinical variables, and PESI score achieved higher c-indices than PESI alone. Following the stratification of patients into high-risk and low-risk groups by models, survival outcomes differed significantly (both P <0.001). A strong correlation was found between high-risk grouping and RV dysfunction. CONCLUSIONS: Multiomic DL models incorporating CTPA features, clinical data, and PESI achieved higher c-indices than PESI alone for PE survival prediction.
Zhong et al. (Wed,) conducted a observational in Pulmonary embolism (n=918). Multimodal deep learning models (CTPA features, clinical data, and PESI score) vs. PESI score alone was evaluated on Pulmonary embolism survival prediction (concordance index) (p=<0.001). Multimodal deep learning models incorporating CTPA features, clinical data, and PESI scores achieved higher concordance indices for predicting pulmonary embolism survival than PESI alone.