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May 25, 1964

To Err With Air

JAMA. 1964;188(8):762-763. doi:10.1001/jama.1964.03060340060026

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To the Editor:—  As to the relative value of the gas contrast technique and the high kilovoltage (KV) method for examination of the large bowel, much can be said on both sides, but what is said must be factual, objective, and unbiased. To advocate abandonment of one or the other of these methods would be radical indeed, yet this is what the author has recommended in regard to the contrast method. This recommendation is made in spite of the fact that both these techniques have been known for several decades and it is the double contrast technique that is the more widely used amongst radiologists, who by this time certainly have had an opportunity to investigate both sides of the situation and to make their free selection. One might expect then that if one were to advocate such a drastic step as abandonment of a procedure which the majority of

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