نتایج جستجو برای: entrance surface dose

تعداد نتایج: 941173  

2017
M. Hajizadeh

I ncreasing diagnostic and therapeutic applications of X-ray in medicine will potentially enhance the radiation dose received by the radiologists; this is of more importance when they perform especial procedures. Although the tube collimator will prevent the exposure of radiologists from primary radiation beam, the scattered radiation from the patient’s body will constitute a potential source o...

Journal: :Revista de Ciências Médicas e Biológicas 2015

Journal: :Radiation protection dosimetry 2008
S Economides C J Hourdakis N Kalivas M Kalathaki G Simantirakis P Tritakis G Manousaridis S Vogiatzi P Kipouros A Boziari V Kamenopoulou

This study presents the results from a survey conducted by the Greek Atomic Energy Commission (GAEC), during the period 1998-2003, in 530 public and private owned fluoroscopic X-ray systems in Greece. Certain operational parameters for conventional and remote control systems were assessed, according to a quality control protocol developed by GAEC on the basis of the current literature. Public (...

Bijan Hashemi, Hossein Ghanaati Mohsen Bakhshandeh Salar Bijari

Introduction: Nowadays, we are witnessing an exponential use of interventional radiology techniques in different communities. After CT, interventional techniques are the second factor of increasing patients’ doses in different societies. Measuring patient doses from aforementioned methods has been recommended by many radiation protection professional organizations such as ICRP...

Introduction: Coronary angiography is the most common angiographic procedure for diagnosis and treatment of the heart diseases. Herein, we aimed to evaluate the entrance surface dose (ESD), dose area product (DAP), as well as cancer risk in interventional cardiology procedures. Materials and Methods: This study was conducted during July-December 2015 at Shahid Madani Heart Center in Khorramabad...

مهدوی, ربیع, رضائی جو, مسعود, هاشمی, بیژن ,

Background and purpose: In-vivo dosimetry is used to ensure accurate delivery of dose to tumors during radiotherapy. This study aimed at measuring the entrance doses without the build-up cap for patients undergoing 15MV radiotherapy and determining the percentage errors between doses measured by films and those calculated with a treatment planning system (TPS). Materials and methods: The stu...

2014
Wook Jae Yoo Sang Hun Shin Dayeong Jeon Seunghan Hong Hyeok In Sim Seon Geun Kim Kyoung Won Jang Seunghyun Cho Won Sik Youn Bongsoo Lee

A miniature fiber-optic dosimeter (FOD) system was fabricated using a plastic scintillating fiber, a plastic optical fiber, and a multi-pixel photon counter to measure real-time entrance surface dose (ESD) during radiation diagnosis. Under varying exposure parameters of a digital radiography (DR) system, we measured the scintillating light related to the ESD using the sensing probe of the FOD, ...

Journal: :Polish Journal of Medical Physics and Engineering 2020

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