Diagnosis: Internal TV

The inside of a diseased human bladder seems an unlikely setting for color TV. But that is where some Chicago urologists have been working; they find the views rewarding for their patients' benefit, and they gain the benefit of permanent videotape records of what they have seen.

The first devices —cystoscopes— for enabling the diagnosing physician to look directly into the bladder were made as long ago as 1877. Despite technical improvements, they still have some shortcomings. Only one doctor at a time can look inside the patient; when the next doctor, or a medical student, looks in, the view...

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