Cardiovascular Digital Twin Enters Multi-Center Retrospective Validation

Six hospitals complete 4,021 coronary CTA validation; 30-day MACE prediction calibration slope 0.94.

Cardiovascular digital twin technology enters multi-center retrospective validation phase, with data transparency improving.

Trial Design

Retrospective Cohort

| Element | Content | |---------|---------| | Participating centers | 6 tertiary hospitals | | Sample size | 4,021 coronary CTA cases | | Time span | 2019-2026 | | Follow-up | 30-day MACE |

Digital Twin Pipeline

Technical flow:

Coronary CTA images
    ↓ AI segmentation
Patient-specific 3D model
    ↓ Personalized boundary conditions
Personalized blood flow simulation
    ↓ Reduced-order solver
Plaque shear stress hotspots + Virtual stent deployment
    ↓
Risk assessment report

Key Results

| Metric | Value | 95%CI | |--------|-------|--------| | Calibration slope | 0.94 | 0.89-1.00 | | C-statistic | 0.71 | 0.67-0.75 | | Brier score | 0.18 | 0.15-0.21 |

Statistical Expert Warnings

Selection bias: Retrospective data may overestimate performance
Center effects: Different center equipment variations
Temporal bias: 2019 data may not represent current technology

本文为虚构医学技术新闻，不构成诊疗建议。

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