Breast shields, tube current modulation drive down pediatric CT doses

March 3, 2008 Breast shields, tube current modulation drive down pediatric CT doses H. A. Abella -------------------------------------------------------------------------------- The combination of tube current modulation and bismuth shields during pediatric chest CT scanning can reduce radiation dose with a minimal impact on image quality, according to a study by researchers from Duke University and the University of Arkansas. Proper implementation of these techniques could be key to safer diagnostic scans. The number of pediatric CT scans performed annually in the U.S. is fast approaching the 10 million mark, according to the clinical literature. This factor, amplified by an increasing awareness about the high radiation doses delivered by CT, has led pediatric imagers to tighten radiation protection measures using both new and old ideas.

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