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Welcome to the AI For All newsletter! Today, we’re talking about an AI second reader for routine chest CTs, agentic AI reducing manufacturing downtime, and more!

AI in Action: Pushing past what the doctor ordered

A chest CT gets ordered for the lungs, but the scanner captures the esophagus too, whether or not anyone had it in mind. A study in Nature Medicine describes EAGLE, a model built to examine it on routine noncontrast scans, a task its authors say was long considered impossible. The esophagus is a narrow tube that collapses on itself and shifts with the heartbeat, and early lesions stay in the superficial layers of its wall. EAGLE first locates the esophagus in the 3D scan, then scores any lesion for malignancy and draws a heat map of the regions behind its call.

The model trained on 6,813 patients from two centers and was validated on 80,612 people at 12 centers in China, the Czech Republic, and Australia. In external tests covering 11,466 patients at eight centers, it caught 90% of cancers at 98.5% specificity. Early disease is harder: sensitivity was 60.1% for stage 1 cancer and 52.5% for precancerous lesions. In a reader study, 17 radiologists went through the same 300 scans twice, alone and then with EAGLE, and their average sensitivity rose from 71.9% to 85.7% while specificity climbed from 79.6% to 91.7%.

The team also adapted EAGLE to the low-dose scans used for lung cancer screening, where it reached 88.4% sensitivity and 99% specificity on 1,607 scans. Among 10,959 people in routine low-dose exams, it flagged eight scans. One held a finding missing from the original report, and the patient was diagnosed with esophageal cancer eight days later. Run on old scans from 28 patients who were later diagnosed, it flagged 18, four of them at least nine months early. The caveats sit mostly in who was studied: the training data came entirely from China, where squamous cell carcinoma is more common, and the model did worse near the junction of esophagus and stomach, where Western adenocarcinoma clusters. It isn't an approved screening test, and the paper reports no data on survival.

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Downtime remains one of manufacturing's most expensive problems. It can interrupt production, delay orders, increase labor pressure, and raise maintenance costs across the plant. The National Institute of Standards and Technology (NIST) estimates that U.S. manufacturers lost $18.1 billion to unplanned downtime tied to preventable maintenance issues.