Tilendra Choudhary
Department of Surgery, Duke University School of Medicine, Durham, NC 27710, USA
Tilendra Choudhary has 1 paper in the ChatPPG research atlas, linked to 1 model and 9 co-authors in the atlas. Main topics: ECG, PPG, cross-modal.
Papers
- CardioFM: A Multimodal Foundation Model for Joint ECG and PPG Representation Learning
CardioFM is a self-supervised foundation model that encodes ECG lead II and PPG together using bidirectional cross-modal attention and adaptive residual vector quantization. It was pretrained on more than 500,000 hours from about 63,000 patients in ICU, surgical, ambulatory and consumer-wearable settings. It reached F1 0.86 for disease classification on PTB-XL, estimated QT interval within 20.2 ms and pulse arrival time within 22.7 ms, and beat ECG-FM, PaPaGei and TimesFM features for ICU false-alarm reduction.
- Signals: ECG lead II, PPG
- Architecture: cross-modal attention + residual vector quantization
- Pretraining data: 500,000+ hours, ~63,000 patients