Results 11 to 20 of about 5,827,281 (280)

Computed tomography dose index and dose length product for cone‐beam CT: Monte Carlo simulations of a commercial system [PDF]

open access: yesJournal of Applied Clinical Medical Physics, 2011
Dosimetry in kilovoltage cone beam computed tomography (CBCT) is a challenge due to the limitation of physical measurements. To address this, we used a Monte Carlo (MC) method to estimate the CT dose index (CTDI) and the dose length product (DLP) for a commercial CBCT system.
Kim, Sangroh   +4 more
exaly   +4 more sources

Evaluating Effective Dose: A Comparison of Methods Based on Organ Dose Calculations versus Dose-Length Product and Monte Carlo Simulation

open access: yesApplied Sciences, 2022
Computed tomography (CT) has had a massive impact on diagnostic radiology over the past few decades. Serious concerns exist because of the increase in the effective radiation dose associated with CT scans, which could pose significant health risks. In CT,
Elfatih Abuelhia   +11 more
doaj   +2 more sources

Clinical Determinants of Dose–Length Product in Pediatric Brain CT: Implications for Age-Specific Imaging Protocols [PDF]

open access: yesJournal of Imaging
Systematic optimization of pediatric brain computed tomography (CT) protocols remains challenging because clinical data are limited for children younger than 5 years.
Kangmin Lee, Jina Shim, Youngjin Lee
doaj   +2 more sources

A survey of computed tomography dose index and dose length product level in usual computed tomography protocol [PDF]

open access: yesJournal of Cancer Research and Therapeutics, 2018
Background: Nowadays, the use of computed tomography (CT) as a diagnostic tool has been considerably increased. Therefore, implementation of the program to conform the protection regulations on the CT scan is necessary to reduce the detrimental effects of radiation.
Akbar, Aliasgharzadeh   +2 more
openaire   +3 more sources

Determination of the conversion coefficients from the dose-length product to the effective dose for CT-examinations of the whole body including lower extremitie

open access: yesРадиационная гигиена
Today in the Russian Federation, the existing method for assessing patients` effective doses during computed tomography in the form of conversion coefficients from the dose-length product provides for the area from the head to the upper third of the ...
P. S. Druzhinina   +5 more
doaj   +2 more sources

Multisection CT Protocols: Sex- and Age-specific Conversion Factors Used to Determine Effective Dose from Dose-Length Product [PDF]

open access: yesRadiology, 2010
To determine conversion factors for the new International Commission on Radiological Protection (ICRP) publication 103 recommendations for adult and pediatric patients and to compare the effective doses derived from Monte Carlo calculations with those derived from dose-length product (DLP) for different body regions and computed tomographic (CT ...
Paul D, Deak   +2 more
exaly   +3 more sources

Evaluation of Local Diagnostic Reference Levels for Paediatric and Adult Patients Undergoing Head Computed Tomography Examination in Amhara Regional States, Ethiopia [PDF]

open access: yesIranian Journal of Medical Physics, 2023
Introduction: During computed tomography examinations variation of dose for pediatric and adults has been increasing widely, even when automated exposure control is used. Hence, the objective of this study was to assess the computed tomography head local
Seife Dellie, Ambaye Tesfaw
doaj   +1 more source

Reject Analysis in Digital Radiography and Computed Tomography: A Belgian Imaging Department Case Study

open access: yesJournal of the Belgian Society of Radiology, 2023
Objective: Reject analysis is usually performed in digital radiography (DR) for quality assurance. Data for computed tomography (CT) rejects remains sparse.
Laura Haddad   +3 more
doaj   +1 more source

Assessment of Organ Dose and Effective Dose from Head Computed Tomography in Northwestern Nigeria

open access: yesUMYU Scientifica Journal, 2022
The amount of radiation dose received by patient undergoing Head computed tomography examination in General Amadi rimi orthopedics and specialist hospital, Katsina has been estimated.
Jamaladdeen Kabir   +2 more
doaj   +1 more source

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