Vision Transformer nomogram from serial ultrasound predicts 3-year liver graft survival

A Vision Transformer-based nomogram using serial grayscale ultrasound images predicted 3-year graft-related adverse event-free survival with an AUC of 0.831 in external validation, outperforming a clinical model (AUC 0.808, p=0.048). A hepatic artery resistive index <0.55 within…

• In a two-part study, a hepatic artery resistive index below 0.55 within 4 days of transplant ruled out early allograft dysfunction with a 92.2% negative predictive value.
• A Vit b/16-based nomogram using Delta features from serial ultrasound at six time points achieved AUCs of 0.951 (training), 0.847 (internal validation), and 0.831 (external validation) for 3-year GRAEFS prediction.
• The study used external validation but lacked prospective evaluation, which the authors note is needed before clinical adoption.

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