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November 1977

Abdominal X-rays After Computerized Tomographic Scans With Enhancement-Reply

Author Affiliations

Dept of Urology University Hospitals Iowa City, IA 52242

Arch Neurol. 1977;34(11):723. doi:10.1001/archneur.1977.00500230093028

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In Reply.—  I would agree with Dr Bachman that not everyone receiving cranial CT scanning should be subjected to an abdominal flat plate roentgenogram, and the attending radiologist must make the choice. As a urologist, I am likewise concerned about gonadal radiation. However, gonadal shielding can easily be accomplished and is often standard practice in abdominal exposures. The radiation exposure from one abdominal flat plate approximates 670 mR, a fraction of the dose exposed in cranial CT scans and well below any known toxic dose. The justification for performing an abdominal flat plate after contrast infusion CT scanning stems from the fact that it would involve little added equipment or time, and the cost could be absorbed in the cost of the relatively expensive CT scan, thus involving no added expense to the patient. If these factors cannot be met effectively and safely for the patient, then the added film should not be

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