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How did X-Rays gain mass adoption?

And what we can learn from this process to understand why cell-free DNA adoption has not skyrocketed yet

Radiologist Alan Hart and others criticized XRs as “large loud sparking smelly devices prone to mishap and injury even when fully under the control of the physicians who in droves invested money and prestige in them”. Alan Hart built statewide clinics in the 1920-30s for TB screening and in the early 1930’s positive contrast was shown to visualize ulcers, tumors, and strictures. By the early 1930s, radiology residency existed, professional societies had been established, hospital workflows were designed to rely on the XR for diagnosis and monitoring of disease.

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