Investigation of patient dose from common radiology examinations in Isfahan, Iran

Authors
Daryoush Shahbazi-Gahrouei
Milad Baradaran-Ghahfarokhi
Department of Medical Physics and Medical Engineering, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
Abstract
Background: The aim of this study was measurement of the radiation doses received by patients for common radiology examinations in hospitals under control of Isfahan University of Medical Sciences, Iran.
Materials and Methods: Thermoluminescence (lithium fluoride chips, LiF: Mg, Tl) dosimeter was used to measure patient dose for four (chest, posterior-anterior and lateral and skull anterior-posterior, or posterior-anterior and lateral) common radiographic views in six hospitals (seven X-ray machines). The entrance surface dose was measured on 20 randomly patients for each X-ray room.
Results: The maximum (8.85 ± 0.62 mGy) and the minimum (0.62 ± 0.22 mGy) values of ESD was obtained for X-ray machines of Shimadzu and Varian located in Ashrafi-Khomeini-shahr and Kashani hospitals, respectively. As results shows, the values of ESD of skull were higher than that of chest examinations.
Conclusion: The results of this study indicated that ESD measured doses were slightly greater than the ICRP and NRPB reference doses. Efforts should be made to further lower patient doses while securing image quality. In addition, the need to provide relevant education and training to staff in the radiology sections is of utmost importance.

Keywords

1. Bushong SC. Radiologic Science for Technologists. St. Louis: Mosby: ISBN 0-323-01337-6; 2001.  Back to cited text no. 1
    
2. National Radiological Protection Board. Chilton, Didcot, UK: NRPB: National protocol for patient dose measurements in diagnostic radiology; 1992.  Back to cited text no. 2
    
3. ICRP. International Commission on Radiological Protection. ICRP Publication 60: Oxford Pergamon Press 1991 Contract No.:21.  Back to cited text no. 3
    
4. International Commission on Radiological Protection. Oxford: England, Pergamon press: Draft No. 5, Feb 2001, Committee 32001.  Back to cited text no. 4
    
5. Hart D, Hillier MC, Wall BF. Doses to patients from medical X-ray examinations in the UK. review 2000. Chilton, Didcot, UK: NRPB; 2002.  Back to cited text no. 5
    
6. Schandorf C, Tetteh GK. Analysis of dose and dose distribution for patients undergoing selected X-ray diagnostic procedures in Ghana. Radiat Prot Dosimetry 1998;76:249-55.  Back to cited text no. 6
    
7. Saxeboel G, Orlerud HM, Lundgren LE. Radiation hygiene analysis of radiological activities in Norway. Radiation and Cancer Risk. New York: Hemisphere Publishing Co-operation; 1990.  Back to cited text no. 7
    
8. Li LB, Wang JP, Yu XR, He SS, Yu FH, Ding CH. Medical radiation usage and exposures from medical X ray diagnosis in Shandong province of China. Radiat Prot Dosimetry 2001;93:261-6.  Back to cited text no. 8
    
9. Muhogora WE, Nyanda AM. The potential for reduction of radiation doses to patients undergoing some common X ray examinations in Tanzania. Radiat Prot Dosimetry 2001;94:381-4.  Back to cited text no. 9
    
10. Michel R, Perle SC. Effective dose equivalent estimates in diagnostic radiology with single dosimetry. Health Phys 2000;79(2 Suppl):S17-9.  Back to cited text no. 10
    
11. Yakoumakis E, Tsalafoutas IA, Nikolaou D, Nazos I, Koulentianos E, Proukakis C. Differences in effective dose estimation from dose-area product and entrance surface dose measurements in intravenous urography. Br J Radiol 2001;74:727-34.  Back to cited text no. 11
    
12. Makri T, Yakoumakis E, Papadopoulou D, Gialousis G, Theodoropoulos V, Sandilos P, et al. Radiation risk assessment in neonatal radiographic examinations of the chest and abdomen: A clinical and Monte Carlo dosimetry study. Phys Med Biol 2006;51:5023-33.  Back to cited text no. 12
    
13. Freitas MB, Yoshimura EM. An overview of doses to patients and irradiation conditions of diagnostic chest x ray examinations carried out in hospitals of the City of Sao Paulo, Brazil. Radiat Prot Dosimetry 2003;103:141-8.  Back to cited text no. 13
    
14. Begum Z. Entrance surface, organ and effective doses for some of the patients undergoing different types of X ray procedures in Bangladesh. Radiat Prot Dosimetry 2001;95:257-62.  Back to cited text no. 14
    
15. Shahbazi-Gahrouei D. Entrance surface dose measurements for routine X-ray examinations in Chaharmahal and Bakhtiari hospitals. Iran J Radiat Res 2006;4:29-33.  Back to cited text no. 15
    
Advanced Biomedical Research
Volume 2012, May
May 2012
Pages 1-4