نتایج جستجو برای: entrance skin dose esd

تعداد نتایج: 504755  

Journal: :Polish Journal of Medical Physics and Engineering 2020

Journal: :Circulation 2001
A den Boer P J de Feijter P W Serruys J R Roelandt

BACKGROUND Radiographically guided investigations may be associated with excessive radiation exposure, which may cause skin injuries. The purpose of this study was to develop and test a system that measures in real time the dose applied to each 1-cm(2) area of skin, taking into account the movement of the x-ray source and changes in the beam characteristics. The goal of such a system is to help...

Journal: :Open Journal of Radiology 2023

As children are prone to be more radiosensitive than adults, it is imperative assess the Entrance Skin Doses (ESDs) for patients being examined by X-rays, in order ensure optimization of dose while considering a number other fickles. The ESD received 50 paediatrics (aged 1-13 years) undergoing 8 types X-ray examinations were measured at Federal Teaching Hospital, Ido-Ekiti, Ekiti, Nigeria, with...

Esen Nsikan U, Obed, R. I

Introduction High doses of ionizing radiation can lead to adverse health outcomes such as cancer induction in humans. Although the consequences are less evident at very low radiation doses, the associated risks are of societal importance. This study aimed at assessing entrance skin doses (ESDs) in patients undergoing selected diagnostic X-ray examinations at public hospitals of Akwa Ibom State,...

Journal: :Open Journal of Radiology 2023

Objective: The current research study aims to calculate entrance surface air kerma for skull, chest, cervical spine, lumbar and pelvic X-ray examinations in interior posterior positions generate a method chest dose reduction decrease radiation risk. Materials Methods: indirect measurement was used the research. tube output measured using RAD-CHECK Plus ionization chamber calculated via applying...

Journal: :Physics in medicine and biology 2004
K E M Mohamadain L A R da Rosa A C P Azevedo M R N Guebel M C B Boechat F Habani

Radiation protection in paediatric radiology deserves special attention since it is assumed that children are more sensitive to radiation than adults. The aim of this work is to estimate the entrance skin dose (ESD), the body organ dose (BOD) and the effective dose (E) for chest x-ray exposure of paediatric patients in five large units, three in Sudan and two in Brazil, and to compare the resul...

Journal: :Japanese Journal of Radiological Technology 2015

Journal: :iranian journal of radiation research 0
r. paydar medical physics and biomedical engineering department, school of medicine, tehran university of medical sciences, tehran, iran a. takavar medical physics and biomedical engineering department, school of medicine, tehran university of medical sciences, tehran, iran m.r. kardan nuclear sciences research school, radiation applications research school, tehran, iran a. babakhani national radiation protection department, iranian nuclear regulatory authority, teheran iran m.r. deevband national radiation protection department, iranian nuclear regulatory authority, teheran iran s. saber pulmonary ward, shariati hospital, school of medicine, tehran university of medical sciences, tehran, iran

background: the radiation doses resulting from diagnostic x-ray examinations are routinely measured in terms of entrance surface dose (esd) and effective dose (ed). in this study, for the purpose of radiation protection, the radiation doses received from digital chest x-ray examination were evaluated in terms of esd and ed. material and methods: the ed was calculated by using the mcnp monte car...

Journal: :journal of biomedical physics and engineering 0
d khoshdel-navi school of medicine, babol university of medical sciences, babol, iran a shabestani-monfared department of medical physics, faculty of medicine, babol university of medical sciences, babol, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی بابل (babol university of medical sciences) m r deevband 3department of medical physics, school of medicine, shahid beheshti university of medical sciences, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی بابل (babol university of medical sciences) r abdi department of radiology, mazandaran university of medical sciences, sari, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences) m nabahati department of radiology, babol university of medical sciences, babol, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مازندران (mazandaran university of medical sciences)

background: the most efficient application of ionizing radiation is serving medical purposes and using this radiation has caused people to learn that artificial sources of radiation exposure among these resources can be of highest exposure rate.   objective: the present study is aimed at initially establishing a baseline for local-reference dose level in mazandaran, iran in 12 projections of th...

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