A real-time reasoning partner for radiology.

I'm Melina Pectasides, an academic abdominal radiologist. I built RadReason as the reasoning scaffold I wanted during my own reads, for attendings and the residents learning beside them.

Most radiology tools give you an answer. I wanted one that thinks alongside the read, the way an attending does on rounds. So RadReason scaffolds the reasoning instead of replacing it. It is decision support and a teaching aid, not an autonomous diagnostic system, and I use it on my own cases.

• RadBrief, my radiology literature digest — joinradbrief.com
• LinkedIn — linkedin.com/in/melina-pectasides-300b554
• Manuscript and validation study: links coming once published.

Most AI tools live outside the reading room. RadReason lives inside it. Tap, describe a finding the way you'd describe it to a colleague, and get a calibrated differential before your cursor reaches the next sentence.

• Mic-first input that mirrors your dictation cadence.
• Quick Diff for fast, no-questions-asked second opinions; Learn Mode for guided reasoning and board-style teaching questions.
• iPhone-first PWA — install once, use it on shift, at the workstation, or at home.

• Practicing radiologists who want fast, structured second-pass reasoning during reads — without leaving their workflow.
• Residents and fellows building differential diagnosis skills and preparing for boards.

RadReason is a radiology reasoning assistant — not a general medical AI tool, and not aimed at non-radiology primary users.

• Calibrated, not confident-wrong. When input is thin, the model widens the differential and tells you what would narrow it.
• Private by default. Cases live only on your device for the active session and disappear on inactivity, logout, or a new case.
• Workflow first. Every interaction is designed to take seconds, not minutes.

RadReason is a clinical decision-support tool. It is not a medical device, not a substitute for clinical judgment, and not for direct-to-patient use. The final read is always yours. See the Privacy and Terms pages for the full picture.