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March 1, 1976

Radiation Exposure

Author Affiliations

Newport Beach, Calif

JAMA. 1976;235(9):909. doi:10.1001/jama.1976.03260350015012

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To the Editor.—  I would like to compliment Dr Holder on his lucid and well-written feature article, "X-ray Machines for Airport Security" (233:1393, 1975).In a very appropriate manner, he covered medical radiation exposure in a separate paragraph and described the meaning of the genetically significant dose (GSD). He also gave some average figures relating to the gonadal dosimetry for certain examinations.I write this letter only to record my disappointment that he failed to mention the recent ongoing efforts of the American College of Radiology, with the cooperation of the Bureau of Radiological Health, to reduce substantially the GSD to the human population resulting from medical use of radiation. The dosimetry figures that he gives in the article would be much reduced by using one of the methods that have been described for gonadal shielding, but in particular, the shaped contact shield for the male patient population.The American