When X-Rays Talk Back: Grounding AI Diagnosis in Evidence, Not Eloquence
Chest X-rays are not mysterious objects. They are images that radiologists interrogate through a disciplined sequence: find the anatomy, measure what matters, compare against criteria, and then make a diagnostic judgment. The modern vision-language model often skips the middle of that sequence. It looks at the image, produces a polished explanation, and hopes the reader will not ask too aggressively where the evidence came from. This is how medical AI becomes impressive in a demo and uncomfortable in a clinic. Fluency is cheap. Verifiability is expensive. ...