نتایج جستجو برای: Diagnostic Reference Level

تعداد نتایج: 1572347  

Journal: :iranian journal of radiation research 0
a. janbabanezhad-toori radiobiology and radiation protection, babol university of medical sciences, babol, iran m.r. deevband department of medical physics and biomedical engineering, school of medicine, shahid beheshti university of medical sciences, tehran, iran a. shabestani-monfared department of medical physics, faculty of medicine, babol university of medical sciences, babol, iran r. abdi department of radiology, mazandaran university of medical sciences, sari, iran m. nabahati department of radiology, babol university of medical sciences, babol, iran

background: computed tomography (ct) is main contributor of population dose from diagnostic x-ray examinations. children are more radiosensitive than adults, thus optimization of ct examination in these patients is essential. the purpose of this study was to evaluate dose delivered to pediatric patients’ undergoing ct examination of the common examinations and also establishing local diagnostic...

Journal: :iranian journal of medical physics 0
mohammad taghi bahreyni toossi medical physics department, medical physics research center, mashhad university of medical sciences, mashhad, iran.

introduction the present work describes a study in which, based on patient dose measurements, thermoluminescent dosimeters were used to obtain the diagnostic reference level arising from panoramic radiography. materials and methods ten panoramic units and a sample of 15 patients per x-ray unit were studied. two thermoluminescent dosimeter chips were placed on the skin surface of selected organs...

Journal: :iranian journal of medical physics 0
malakeh malekzadeh paramedical school. babol university of medical sciences. babol. iran

introduction given the fact that children are more sensitive to radiation, compared to adults, special attention needs to be paid to radiation protection in pediatric radiology. diagnostic reference level (drl) has been defined to be employed as a practical tool for examining the overall performance of a radiological center in terms of patient dose among a series of similar equipments in an are...

Journal: :iranian journal of radiation research 0
n. n. jibiri radiation and health physics research laboratory, department of physics, university of ibadan, ibadan nigeria b. adeleye radiation and health physics research laboratory, department of physics, university of ibadan, ibadan nigeria b. kolude department of oral pathology, college of medicine, university of ibadan, ibadan, nigeria

background: intraoral radiographs are believed to deliver low doses to patients, thus little work has been done in this regards. considering the increment in the number of patients reporting for the examination and the probability of delayed somatic effects for accumulated low doses of x-irradiation, it is expedient to determine the doses to three critical organs eye, thyroid and parotid that a...

Introduction The present work describes a study in which, based on patient dose measurements, thermoluminescent dosimeters were used to obtain the diagnostic reference level arising from panoramic radiography. Materials and Methods Ten panoramic units and a sample of 15 patients per X-ray unit were studied. Two thermoluminescent dosimeter chips were placed on the skin surface of selected organs...

A. Kavousi, A. Shareghi, F. Nazeri, H. Mozdarani, M. Ghiassi-Nejad, M. Jafari-Zadeh, S.M.J. Mortazavi,

Background: Intraoral radiographies are the most frequent X-ray examinations in humans. According to International Commission on Radiation Protection (ICRP) recommendations, the selection of a diagnostic reference level (DRL) should be specific to a country or region. Critica l organs such as thyroid gland are exposed to X-rays in intraoral radiography and these exposures should be kept as low ...

افضلی‌پور, رضا, خسروی, حمیدرضا, فاطمه حسینی, آغا, مهدوی, سید ربیع, نشاسته‌ریز, علی,

Background: Today, a CT scan examination play an important role in disease diagnosis and thus allocates a significant dose of medical X-ray examinations. One of the important principles in the use of ionizing radiations is to observe radiation protection principles. Evaluating patient's absorbed dose and implementing the strategies for reducing dose are prior in safety issues. To achieve this p...

Journal: :International research journal of engineering, IT & scientific research 2019

Journal: :iranian journal of radiation research 0
s.m.j. mortazavi school of medicine, rafsanjan university of medical sciences, rafsanjan, iran a. shareghi m. ghiassi-nejad a. kavousi m. jafari-zadeh f. nazeri

background: intraoral radiographies are the most frequent x-ray examinations in humans. according to international commission on radiation protection (icrp) recommendations, the selection of a diagnostic reference level (drl) should be specific to a country or region. critica l organs such as thyroid gland are exposed to x-rays in intraoral radiography and these exposures should be kept as low ...

Malakeh Malekzadeh, Mohammad Taghi BahreyniToossi

Introduction Given the fact that children are more sensitive to radiation, compared to adults, special attention needs to be paid to radiation protection in pediatric radiology. Diagnostic reference level (DRL) has been defined to be employed as a practical tool for examining the overall performance of a radiological center in terms of patient dose among a series of similar equipments in an are...

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