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Radiation dose for pediatric brain CT reduced by iterative reconstruction techniques

A study conducted at and found that estimated are substantially lower for pediatric CT exams of the brain that used an adaptive statistical iterative reconstruction technique () compared to those that did not use . The researchers found that the brain and salivary gland doses were much lower for -enabled exams compared to those without technique. However, no differences in the estimated organ doses were found for the thyroid gland, skeleton, and eye lenses across these two cohorts of CT exams.

“CT is an important concern with all imaging sites, especially for children,” said Ranish Deedar Ali Khawaja. “We performed this study to do a preliminary analysis of pediatric head CT examinations and to assess the factors influencing radiation doses.”

Mean radiation dose was 1.6 ± 1.5 mSv (estimated effective dose) in pediatric head CT. In addition to the iterative reconstruction algorithm, patient age and effective body diameter significantly affected the doses.

Dr. Khawaja and his fellow researchers presented the study at the 2014 ARRS Annual Meeting in San Diego, CA.


American Roentgen Ray Society