نتایج جستجو برای: ctdiw

تعداد نتایج: 36  

Background: Medical X-rays are the largest man-made source of public exposure to ionizing radiation. While the benefits of Computed Tomography (CT) are well known in accurate diagnosis, those benefits are not risk-free. CT is a device with higher patient dose in comparison with other conventional radiation procedures. Objective: This study is aimed at evaluating radiation dose to patients from ...

D. Shahbazi, F. Bouzarjomehri, M. H. Zare,

  ABSTRACT   Background: While the benefits of Computed Tomography (CT) are well known in accurate diagnosis, those benefits are not risk free. CT is a device with higher patient dose in comparison with other conventional radiological procedures. Is the reduction of exposures by requiring optimization of CT procedures [a principle concern in radiological protection]? In this study, the radiatio...

A. Mesbahi, I. Pesianian, S.M. Ghavami,

Background: X-ray computed tomography (CT) examinations deliver a significant amount of radiation doses to patients comparing to conventional radiography examinations. The objective of the current study was to analyze and investigate the average patient received dose from axial and spiral CT exams in a medical imaging center. Material and Methods: In this study, the patient imaging tec...

Journal: :iranian journal of radiation research 0
l. sadri department of nuclear engineering and physics, amir kabir university of technology, tehran, iran h.r. khosravi nuclear sciences school, nuclear science and technology research institute, and nuclear & radiation support department, iranian nuclear regulatory authority, tehran, iran s. setayeshi department of nuclear engineering and physics, amir kabir university of technology, tehran, iran

background: patient radiation doses from computed tomography (ct) are increasing due to the number of ct examinations performed every day. the aim of this study was assess and evaluate patient radiation doses for adult’s common ct examinations to derive local diagnostic guidance levels for common ct examinations. materials and methods: volume and weighted computed tomography dose index (ctdivol...

H.R. Khosravi, L. Sadri, S. Setayeshi,

Background: Patient radiation doses from computed tomography (CT) are increasing due to the number of CT examinations performed every day. The aim of this study was assess and evaluate patient radiation doses for adult’s common CT examinations to derive local diagnostic guidance levels for common CT examinations. Materials and Methods: Volume and weighted computed tomography dose index (C...

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 radiation research 0
s.m. ghavami radiology department, paramedical school, tabriz university of medical sciences, tabriz, iran a. mesbahi medical physics department, medical school, tabriz university of medical sciences, tabriz, iran i. pesianian radiology department, paramedical school, tabriz university of medical sciences, tabriz, iran

background: x-ray computed tomography (ct) examinations deliver a significant amount of radiation doses to patients comparing to conventional radiography examinations. the objective of the current study was to analyze and investigate the average patient received dose from axial and spiral ct exams in a medical imaging center. material and methods: in this study, the patient imaging technique, w...

Ahdiyeh Aghaz Bahador Bahadorzadeh, Mohammad Reza Deevband Mohammad Reza Kardan

Introduction: Dental Cone beam CT (CBCT) is an imaging modality which has emerged as a 3D imaging modality of choice for osseous structures in the maxillofacial region. With increased usage of CBCT imaging for diagnosis and treatment planning, it is imperative that stringent dose assessments must be performed for dose estimation to safeguard both the patients and operating staf...

A. Janbabanezhad-Toori, A. Shabestani-Monfared, M. Nabahati, M.R. Deevband, R. Abdi,

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 Diag...

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