Introduction: The most important complication of X-ray overdose is the increased risk of malignancies, especially cancers in children. Khomeini Ahvaz was carried out in 2019.
Method: This study was a descriptive study and its purpose was to evaluate the effective cumulative dose of radiation in patients under 12 years of age with a CT scan of Imam Khomeini Hospital in Ahvaz in 1397. The number of samples was equal to 120 patients who referred and were selected using census sampling. The information was completed by the data collection form and by the researcher using the patient's medical record. Data were analyzed by SPSS22 software with a significance level of 0.05.
Results: The average absorbed dose per unit volume was 19.90 2 2.07 for the head, 3.45 1 1.22 for the neck, 2.07 58 1.58 for the chest and 69 for the abdomen and pelvis. It was 1.76 1 1. The mean absorption dose per unit volume was significantly different between the two limbs of the chest with neck (P = 0.003), abdomen and pelvis with neck (P = 0.0001) and abdomen and pelvis with chest (P = 0.0001) (P <0.05). ). The average absorption dose along the length was 278.20 71 71.75 for the head, 86.88 39 39.64 for the neck, 56.10 47 47.66 for the chest and 24 for the abdomen and pelvis. / 64 ± 15/56. The mean absorption dose along the length was significantly different between the abdomen and pelvis with neck (P = 0.0001) and abdomen and pelvis with chest (P = 0.0001) (P <0.05). The thickness was 4.8 mm in the head, 3 mm in the neck, 8 mm in the chest, and 5 mm in the abdomen and pelvis.