T-shirt size, a determinant of CT radiation doses?
USA: A recent study in the European Journal of Radiology has described a new approach to denote patient size by T-shirt size. According to the study, adjusting radiation dose for patients on the basis of their T-shirt size could be an easy approach for clinicians for estimating appropriate doses for CT exams.
The approach makes it easier to set appropriate radiation doses for patients undergoing CT exams. "The concept of expressing body size as T-shirt size is simple and intuitive," Madan M. Rehani, Massachusetts General Hospital, Boston, MA, USA, and colleagues wrote in their study.
The study was conducted with the objective to examine the impact of patient size on dose indices and develop size-based reference levels (50th and 75th percentiles) for 20 body CT exams for routine and organ-specific clinical indications.
For the purpose, the researchers classified each acquisition into T-shirt size as XXS, XS, S, M, L, XL, and XXL based on effective diameter estimated from adult body CT. Radiation dose indices for each size and each exam type were correlated.
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