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MIT Study Reveals Medical AI Models Fail on Up to 75% of New Data Despite Strong Overall Performance

MIT Study Reveals Medical AI Models Fail on Up to 75% of New Data Despite Strong Overall Performance

Jan 22, 2026
MIT News | Massachusetts Institute of Technology

MIT researchers discover that medical AI models appearing highly effective can catastrophically fail on up to 75% of new data when deployed in different hospital settings, with chest X-ray diagnostic systems missing critical conditions like pleural diseases due to spurious correlations that aren't caught by standard performance metrics.

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