Document Type : original article
Department of Radiology, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Background: The most important complication of X-ray overdose is the increased risk of malignancies, especially cancers in children. The present study was, then, conducted to evaluate the effective dose of cumulative radiation among the under-12 patients referred to the CT-scan unit of Imam Khomeini Hospital in Ahvaz, Iran, during 2018.
Methods: This descriptive study was performed on 120 patients who were selected through census sampling method. A data collection form and the patient's medical records were implemented for collecting the required information. Data were analyzed by SPSS 22 software with a significance level of 0.05.
Results: The average absorbed dose per unit volume was 19.90±2.07 for the head, 3.45 ±1.22 for the neck, 2.07±1.58 for the chest, and for the abdomen and pelvis it was equal to 1.76±1.69. The mean absorption dose per unit volume was significantly different between the two organs while comparing 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 mean absorption dose along the length was 278.20 ±71.75 for the head, 86.88 ±39.64 for the neck, 56.10±47.66 for the chest, and for the abdomen and pelvis it was 24.64 ±15.56. The mean absorption dose along the length was significantly different while comparing 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.
Conclusion: By calculating the dose indices in children, and comparing them with the internationally approved normal doses, we can minimize the harmful effects of radiation on children. The staff and radiologists should be trained about the protocols and principles of radiation protection, as well as the quality control of devices.
- Jamshidi M.H Estimation of the patient's actual dose in the CT scan of the abdomen and Pelvis based on the branch of the body mass through the application of milliamps effective. Jundishapur University of Medical Sciences, Ahvaz: faculty unit, 1394. P79.
- Gholamhosein H, Mehdizadeh S, Haddadi MB, Meshkibaf MH. Evaluation of absorbed dose of critical organ in rando phantom under head, abdomen and pelvis spiral ct scan by thermo luminescent dosimetry_TLD. JFUMS. 2013 09(14); 1(3): 131-135.
- Amirnia A, Mehnati P, Jabbari N. Estimation of absorbed dose of radiosensitive organs and effective dose in patients underwent abdominopelvic spiral CTscan using impact CT patient dosimetry. TUMJ. 2017 May; 75(2):103-12.
- Huda W,Vanca A.Patient radiation doses from adult and pediatric ct. AJR Am J roentgenol. 2007 feb; 188(2):540-6.
- Bahraini SMT, Zerghani H. Estimation of the risk of cancerCaused by some radiographs of Wright in Sabzevar city. Iran Medical Physics J, 2011 oct; 8(3):13-19.
- Pourkaveh M, Nikzad S, Jabbari Vesal N. Measuring the Entrance Surface Dose and Effective Dose for Chest and Abdomen X-ray Examinations in Hamedan,Iran and their Comparison with International Standards.J Mazandaran Univ Med Sci. 2017; 27(147): 249-258.
- Diagnostic reference levels in medical imaging.” Review and additional advice a web module produced by committee 3 of the international on Radiological protection (ICRP)” September 2001.
- Shrimpton PC, Well BF, Jones DG, Fisher ES, Hillier MC, Kendall GM, Harrison RM. A national survey of doses in patients of routine x-ray examinations in English hospitals. National Radiological protection Board NRPB-R200.Oxford shire, United Kingdom: NRPB 1986
- AJNR Am J Neuroradiol 21:1654-16660, October 2000.
- Nishizawa K, Maruyama M, Okada M, Hachiya J, Furuya Y.Determination of organ doses and effective dose equivalents from computed tomographic examination.Br JRadiology. 1991; 64: 20-8.
- Caracappa, PF. Investigation of patient dose from CT examination using the VIP-Man Model.Rensselaer Polytechnic Institute Master’s thesis. 2001 April.
- International Commission on Radiological Protection, 1990 Recommendation of ICRP.Publication 60, 1991
- Sadra H, Deevband MR, Sardary D. Estimated organ and effective dose from CT examinations using software impact at Shahid Beheshti University of Medical Sciences hospitals.Research in Medicine 2015; Vol.39; No.1; 26-29.
- Eh DM, Tsai HY, Tyan YS, Yeh DM, Tsai HY, Tyan YS, Chang YC, Pan LK, Chen TR. The population effective dose of medical computed tomography examinations in Taiwan for 2013.PLOS One. 2016 Oct 27; 11(10):e0165526.
- Khalilpour M, Norouzzadeh SH, Dadras M. Assessment of Brain absorbed X-ray dose during CT- Scan using ImPACT software in Tehran University hospitals. Tehran University Medical Journal; Vol. 67, No. 4, July 2009: 257-261.
- Aldrich JE, Bilawich AM, Mayo JR. Radiation doses to patients receiving computed tomography examinations in British Columbia.Can Assoc Radiol J. 2006 Apr;57(2):79-85.
- Ogbole GI. Radiation dose in pediatric computed tomography: Risks and benefits.Annals of Ibadan Postgraduate Medicine. Vol. 8 No. 2 December, 2010.
- Kharbanda A, Krause E, Lu Y, Blumberg K. Analysis of Radiation Dose to Pediatric Patients During Computed Tomography Examinations.ACADEMIC EMERGENCY MEDICINE • June 2015, Vol. 22, No. 6.
- Mazonakis M, Damilakis J, Raissaki M, Gourtsoyiannis N. Radiation dose and cancer risk to children undergoing skull radiography. Pediatr Radiol 2004 Aug; 34(8):624-9.