Organ dose and risk assessment in paediatric radiography using the PCXMC 2.0

International Conference on Bio-Medical Instrumentation and related Engineering and Physical Sciences

物理学;医药卫生

Ladia, A.^1 ; Messaris, G.^1 ; Delis, H.^1 ; Panayiotakis, G.^1

Department of Medical Physics, School of Medicine, University of Patras, Patras

26500, Greece^1

关键词: Age groups;    Chest radiographs;    Expected life;    Exposure parameters;    Organ dose;    Radiation risk;    X ray examination;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/637/1/012014/pdf
DOI  :  10.1088/1742-6596/637/1/012014

学科分类：卫生学

来源: IOP

【 摘 要 】

Abdominal and chest radiographs are the most common examinations in paediatric radiology. X-ray examination of children attracts particular interest, mainly due to the increased risk for the expression of delayed radiogenic cancers as they have many years of expected life remaining. This study aims to calculate the organ dose and estimate the radiation Risk of Exposure Induced cancer Death (REID) to paediatric patients, using the PCXMC 2.0 Monte Carlo code.Patient data and exposure parameters were recorded during examinations of 240 patients, separated in four age groups undergoing chest or abdomen examinations.The organs received the highest dose in all patient groups were liver, lungs, stomach, thyroid, pancreas, breast, spleen in chest radiographs and liver, lungs, colon, stomach and ovaries, uterus (for girls) and prostate (for boys) in abdomen radiographs. The effective dosefor the chest was 0.49×10-2- 1.07×10-2mSv, while for the abdomen 1.85×10-2- 3.02×10-2mSv. The mean REID value was 1.254×10-5for the abdomen and 0.645×10-5for the chest.