ECHO: Efficient Chest X-ray Report Generation with One-step Block Diffusion

In three linesECHO is a diffusion-based model for chest X-ray report generation. It uses Direct Conditional Distillation and Response-Asymmetric Diffusion training to enable one-step-per-block inference, achieving 8× inference speedup while improving RaTE (+64.33%) and SemScore (+60.58%) over autoregressive baselines with negligible clinical accuracy loss.

Summary generated by Claude — human-verified