Woojin Kim, MD
@woojinkim.com
210 followers 81 following 370 posts
CSO & CMIO @ HOPPR | CMO @ ACR DSI | MSK Radiologist | Imaging Informaticist | AI Enthusiast | Entrepreneur | AI artist | Travel Photographer. Posts are my own.
Posts Media Videos Starter Packs
woojinkim.com
✨ In 2017, I gave my first lecture at #NIIC.
This week, I'll be back to speak on "Generative and Agentic AI in Medical Imaging."

👥 NIIC has been part of my professional journey for nearly a decade, and it is my way of giving back to the field that has given me so much!
woojinkim.com
You can't eval GPT5 anymore — LessWrong

"The GPT-5 API is aware of today's date (no other model provider does this)... Once the model knows that it is in a simulation, it starts questioning other parts of the simulation."

www.lesswrong.com/posts/DLZokL...
You can't eval GPT5 anymore — LessWrong
The GPT-5 API is aware of today's date (no other model provider does this). This is problematic because the model becomes aware that it is in a simul…
www.lesswrong.com
woojinkim.com
Magical Thinking on AI

Friedman is not wrong to worry about what's going to happen vis a vis the U.S., China, and AI. However, we need less magical thinking and more realism.

aiguide.substack.com/p/magical-th...
Magical Thinking on AI
A Response to Thomas Friedman's Recent AI Columns in the New York Times
aiguide.substack.com
woojinkim.com
😊 My "Frozen Shoulder" submission from last year's #RSNA24 "The Art of Imaging Art Contest" was just published in the @rsnasky.bsky.social Radiology Advances journal. academic.oup.com/radadv/artic...
woojinkim.com
After studying 1,500 papers, this post says common prompt-engineering advice is often wrong. Top companies use short, structured prompts, automate and continuously optimize them, and match techniques to the task.

aakashgupta.medium.com/i-studied-1-...
I Studied 1,500 Academic Papers on Prompt Engineering. Here’s Why Everything You Know Is Wrong.
The $50M+ ARR companies are doing the exact opposite of what everyone teaches
aakashgupta.medium.com
woojinkim.com
Silicon Valley’s AI deals are creating zombie startups: ‘You hollowed out the organization’

"...it’s a trend that threatens to thwart innovation as founders abandon their ambitious projects to work for the biggest companies in the world."

www.cnbc.com/2025/08/19/h...
Silicon Valley's AI deals are creating zombie startups: 'You hollowed out the organization'
Unable to make big AI purchases because of regulatory hurdles, tech giants have spent billions to buy top talent from startups, leaving behind shell companies.
www.cnbc.com
woojinkim.com
Why language models hallucinate

Hallucinations occur partly because standard evaluation methods reward guessing over acknowledging uncertainty, encouraging models to guess rather than say "I don't know".

openai.com/index/why-la...
Why language models hallucinate
OpenAI’s new research explains why language models hallucinate. The findings show how improved evaluations can enhance AI reliability, honesty, and safety.
openai.com
woojinkim.com
8/ View other artworks and vote 👉 rsna.wishpond.com/art-of-imagi...

#RSNAContest
woojinkim.com
6/
The Prior-Auth Loop 👉 rsna.wishpond.com/art-of-imagi...

#RSNAContest
woojinkim.com
🎨 @rsnasky.bsky.social is again conducting "The Art of Imaging Art Contest", and top picks will be displayed at #RSNA25.

🗳️ Vote for your favorite art entry by September 18th!

🔗 to each of my artwork is in this 🧵👇

Anna’s Hand 👉 rsna.wishpond.com/art-of-imagi...

#AIart #RadiologyArt #NanoBanana
woojinkim.com
Clinician Perspectives on AI-Generated Drafts of Test Result Explanations

AI-generated draft comments show promise to reduce clinician burden and improve patient communication, but need further refinement before broad implementation.

jamanetwork.com/journals/jam...
Clinician Perspectives on AI-Generated Drafts of Test Result Explanations
This quality improvement study evaluates clinician perspectives on the usability and utility of generative artificial intelligence (AI)–based large language model tool to draft result comments for…
jamanetwork.com
woojinkim.com
AI ranks scientific papers that have been secretly rewritten by AI higher than human-written ones

⚠️ Why there is a growing incentive to lie about AI use in academia

medium.com/the-generato...
AI ranks scientific papers that have been secretly rewritten by AI higher than human-written ones
Why there is a growing incentive to lie about AI use in academia
medium.com
woojinkim.com
MIT report: 95% of enterprise GenAI pilots fail—success hinges on targeted adoption, smart partnerships, and deep workflow integration. Biggest ROI? Back-office automation, not sales tools.

fortune.com/2025/08/18/m...
MIT report: 95% of generative AI pilots at companies are failing
There’s a stark difference in success rates between companies that purchase AI tools from vendors and those that build them internally.
fortune.com