March 16, 2017
Dosimetry using average-sized phantoms leads to considerable errors
The use of non-size-dependent reference phantoms to calculate CT dose can lead to errors in calculating the radiation received by a patient, according to an article published in the American Journal of Roentgenology. Using data from the National Lung Screening Trial, researchers found using an average height and weight to calculate dose can lead to errors of up to 200 percent when compared with a more accurate estimate using a particular patient’s height and weight.