Related Experiment Video
Updated: Mar 14, 2026

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging
Published on: September 11, 2011
The effect of increased body mass index on patient dose in paediatric radiography
Arsenoi P Ladia1, Spyros G Skiadopoulos1, Anna Ν Karahaliou1
1Department of Medical Physics, School of Medicine, University of Patras, Patras 26504, Greece.
Insights
Overweight children aged 5-6.5 years experience higher radiation doses and cancer risks during chest and abdomen X-rays. Increased body mass index (BMI) significantly impacts radiation exposure in paediatric radiography.
Area of Science:
- Radiology
- Paediatric Imaging
- Radiation Dosimetry
Background:
- Radiation protection is critical in paediatric radiology.
- Childhood obesity rates are rising, potentially affecting radiation dose.
- Understanding the impact of increased body mass index (BMI) on radiation exposure is essential.
Purpose of the Study:
- To investigate the influence of increased BMI on radiation dose and associated risks in paediatric patients undergoing radiography.
- To compare radiation doses and cancer risks between normal weight and overweight children.
Main Methods:
- Studied 128 paediatric patients (aged 5-6.5 years) undergoing chest or abdomen radiography.
- Categorized patients into normal and overweight groups based on BMI.
- Calculated entrance surface dose (ESD), organ dose, effective dose (ED), and risk of exposure-induced cancer death (REID) using Monte Carlo simulation (PCXMC 2.0).
Main Results:
- Overweight patients showed a statistically significant increase in radiation dose and REID compared to normal weight patients (p<0.001).
- Percentage increases for overweight vs. normal weight patients included: ESD (13.6% chest, 15.0% abdomen), maximum organ dose (24.4% chest, 24.7% abdomen), ED (18.9% chest, 21.8% abdomen), and REID (20.6% chest, 19.8% abdomen).
Conclusions:
- Increased BMI in paediatric patients leads to higher radiation doses in chest and abdomen radiography.
- Overweight children face elevated risks of cancer induction from diagnostic imaging procedures.
- Paediatric radiation protection strategies should consider patient BMI.
Abstract:
Radiation protection is of particular importance in paediatric radiology. In this study, the influence of increased body mass index (BMI) in radiation dose and associated risk was investigated for paediatric patients aged 5-6.5 years, undergoing chest (64 patients) or abdomen (64 patients) radiography. Patients were categorized into normal and overweight, according to the BMI classification scheme. Entrance surface dose (ESD), organ dose, effective dose (ED) and risk of exposure induced cancer death (REID) were calculated using the Monte Carlo based code PCXMC 2.0. Statistically significant increase in patient radiation dose and REID was obtained for overweight patients as compared to normal ones, in both chest and abdomen examinations (Wilcoxon singed-rank test for paired data, p<0.001). The percentage increase in overweight as compared to normal patients of ESD, organ dose (maximum value), ED and REID was 13.6%, 24.4%, 18.9% and 20.6%, respectively, in case of chest radiographs. Corresponding values in case of abdomen radiographs were 15.0%, 24.7%, 21.8% and 19.8%, respectively. An increased BMI results in increased patient radiation dose in chest and abdomen paediatric radiography.
More Related Videos
Related Concept Videos
Drug Dosing: Obese Patients
Drug Dosing: Infants and Children
Biological Effects of Radiation
Radiological Investigation I: X-ray and CT
X-ray Imaging
Pharmacokinetics in Pediatric Patients: Drug Distribution

