International Journal of Pediatrics، جلد ۴، شماره ۷، صفحات ۲۱۸۳-۲۱۹۱
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عنوان انگلیسی Dose Reduction to the Thyroid Gland in Pediatric Chest Radiography
چکیده انگلیسی مقاله Background It is remain a main concern that pediatric chest radiographies contribute to the significant radiation exposure to the thyroid gland as a more susceptible organ to radiation induced cancer. The aim of this study was to evaluate the entrance surface dose (ESD) of pediatric chest radiography compared to the diagnostic reference levels (DRL) and evaluation the efficacy of the lead (Pb) shield in radiation dose reduction to the thyroid gland.Materials and Methods After assessing each patient against specific inclusion-exclusion criteria, 40 pediatric patients who were undergoing anterior-posterior (AP) projection of the chest x-ray were considered eligible for this study. The ESD of the chest and also ESD of thyroid gland with and without a 1 mm butterfly-shaped lead shield which placed on the thyroid gland were measured using high sensitive thermo luminescent dosimeters (TLD-GR 200).Results The average of ESD for chest radiography was 0.068+ 0.006 mGy (0.021 - 0.232 mGy). The unshielded average thyroid ESD was 0.065 + 0.003 mGy compared to the shielded average thyroid ESD of 0.001 + 0.0005 mGy. The use of Pb-shield produced a statistically significant decrease in the average thyroid dose by about 97% (P< 0.001). Conclusion The use of Pb-thyroid shield in the AP projection of pediatric chest radiography has potential to reduced radiation dose without compromising image quality.
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نویسندگان مقاله وحید کرمی | vahid karami
medical physics student msc , department of medical physics, student research committee, school of medicine, ahvaz jundishapur university of medical sciences, ahvaz, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی جندی شاپور اهواز (Ahvaz jundishapur university of medical sciences)

منصور ذبیح زاده | mansour zabihzadeh
assistant professor, department of medical physics, school of medicine, student research committee, ahvaz jundishapur university of medical sciences, ahvaz, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی جندی شاپور اهواز (Ahvaz jundishapur university of medical sciences)

مهرداد غلامی | mehrdad gholami
assistant professor, department of medical physics, lorestan university of medical sciences, khorram abad, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی لرستان (Lorestan university of medical sciences)

نسیم شمس | nasim shams
assistant professor phd , department of oral and maxillofacial radiology, school of dentistry, ahvaz jundishapur university of medical sciences, ahvaz, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی جندی شاپور اهواز (Ahvaz jundishapur university of medical sciences)

زهرا فاضلی نژاد | zahra fazeli nezhad
radiologist, department of radiology, school of medicine, ahvaz jundishapur university of medical sciences, ahvaz, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی جندی شاپور اهواز (Ahvaz jundishapur university of medical sciences)

نشانی اینترنتی http://ijp.mums.ac.ir/article_7081.html
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