Monte Carlo evaluation of effective dose and risk of exposure induced cancer death (REID) for common examinations in stereo radiography (EOS) imaging: Considering age and gender

The aim of this study is to evaluate the effective dose and cancer risk of examinations in EOS imaging system in different age and gender groups. In total, 555 patients who had undergone common EOS imaging examinations were entered into the study. Exposure parameters and patients’ characteristics for lower limb, full spine and full body imaging techniques, at different gender and age groups, were evaluated. Finally, effective dose and risk of exposure induced cancer death (REID) was calculated with the Monte Carlo based PCXMC software. The difference between average effective doses of male and female was not significant (p ≥ 0.05), however, the corresponding REID showed statistically significant difference (p ≤ 0.001). The average effective dose of patients (without considering technique, age and gender) was obtained as 0.13 mSv. The corresponding average REID was 8.84 per million. The maximum average effective dose value was obtained for patients over 10 years of age with the full body technique (0.17 ± 0.05 mSv). The maximum average REID value was obtained for full body technique and for patient with 0–10 years old (15.20 ± 10.00 per million). In common EOS imaging examinations, the effective dose and REID values of patients in both genders in all age groups are less than the corresponding values in other imaging modalities (according to previous studies). However, according to stochastic effects of ionizing radiation and based on the As Low As Reasonably Achievable (ALARA) principle, more considerations are necessary, especially in the full body technique and for female examinations. L'objectif de cette étude est d'évaluer la dose efficace et le risque de cancer des examens dans le système d'imagerie EOS dans différents groupes d'âge et de sexe. Au total, 555 patients ayant subi des examens d'imagerie EOS courants ont été inclus dans l'étude. Les paramètres d'exposition et les caractéristiques des patients pour les techniques d'imagerie des membres inférieurs, de la colonne vertébrale et du corps entier, dans différents groupes d'âge et de sexe, ont été évalués. Enfin, la dose effective et le risque de décès par cancer induit par l'exposition (RDIE) ont été calculés avec le logiciel PCXMC basé sur la méthode de Monte Carlo. La différence entre les doses efficaces moyennes des hommes et des femmes n'était pas significative (p ≥ 0,05), cependant, le RDIE correspondant a montré une différence statistiquement significative ( p ≤ 0,001). La dose efficace moy