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Graph Medicine: When RAG Stops Guessing and Starts Diagnosing

Hospitals do not suffer from a shortage of medical text. They suffer from a shortage of medical text that machines can use without becoming dangerously imaginative. Clinical guidelines are full of thresholds, exceptions, disease associations, diagnostic pathways, and terminology that looks tidy only until someone tries to automate it. A guideline may say one thing about a biomarker in the context of cardiovascular risk, another in renal disease, and something subtly different when age, sex, postoperative status, or treatment history enters the room. This is exactly the sort of nuance that makes large language models useful—and also exactly the sort of nuance that makes them risky. ...

November 18, 2025 · 15 min · Zelina
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Learning by X-ray: When Surgical Robots Teach Themselves to See in Shadows

X-rays are useful because they are cheap, familiar, and already sitting in the operating room. They are also, inconveniently, shadows. That is the central tension in Investigating Robot Control Policy Learning for Autonomous X-ray-guided Spine Procedures, a paper that asks whether a robot policy can plan vertebroplasty cannula trajectories from only bi-planar X-ray views—one anterior-posterior view, one lateral view—without CT-based navigation, registration, or a lovingly over-engineered suite of intra-operative infrastructure.1 ...

November 9, 2025 · 14 min · Zelina
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Hive Minds and Hallucinations: A Smarter Way to Trust LLMs

TL;DR for operators The paper is useful because it treats hallucination less like a mystical defect of large language models and more like an operational risk that can be routed, checked, scored, and sometimes refused. Amer and Amer propose a proof-of-concept multi-agent architecture for SMS-based pharmacy prescription-renewal requests.1 A customer might send a clean message like “1, unenroll”, or something messier: a renewal code, a complaint about medicine taste, a question about blood-pressure medication, and a polite thank-you bundled into one little administrative grenade. ...

July 3, 2025 · 19 min · Zelina