Results 21 to 30 of about 6,102,153 (248)

Local Diagnostic Reference Levels for Common Computed Tomography Procedures at a Tertiary Hospital in South Africa [PDF]

open access: yesIranian Journal of Medical Physics, 2019
Introduction: An operational computed tomography (CT) scanner is a major source of human exposure to ionizing radiation. Exposure increases the risk of cancer and aplastic anaemia.
Mpumelelo Nyathi, Gezani Isaac Shivambu
doaj   +1 more source

A comparison of computational methods for estimation of effective and organ doses to the patients from CT examination

open access: yesРадиационная гигиена, 2017
The current study was devoted to estimation of effective and organ doses to the patients from the most common computed tomography (CT) examinations: head, chest, abdomen, chest+abdomen+pelvis in advanced scanners.
L. A. Chipiga
doaj   +1 more source

Comparison of Radiation Doses of Computed Tomography Brain and Pulmonary Angiography with International Commission on Radiological Protection Guidelines: A Descriptive Study [PDF]

open access: yesJournal of Clinical and Diagnostic Research
Introduction: Computed Tomography Angiography (CTA) is useful for evaluating and diagnosing conditions related to blood vessels, such as aneurysms, stenosis (narrowing of vessels), vascular malformations, and blockages.
AF Fidha   +2 more
doaj   +1 more source

Validation of a Locally Designed Computed Tomography Dose Phantom: A Comparison Study with a Standard Acrylic Phantom in South-South, Nigeria

open access: yesJournal of Global Radiology, 2021
Purpose: The aim of this study was to determine the mean volume computed tomography dose index (CTDIvol) for the standard head and body phantoms and locally designed head and body phantoms respectively.
Anwuli Christiana Tobi   +3 more
doaj   +1 more source

Radiation dose reduction in CT-guided cryoablation of renal tumors [PDF]

open access: yes, 2021
PURPOSEWe aimed to evaluate the effect on the radiation dose to the patient by reducing the tube current during the placement of the ablation needles (reduced dose group) compared with the patient doses delivered when scanning at the standard fully ...
Jim Zhong   +5 more
core   +1 more source

Patient Dose Estimation Using CT-Expo Software at Two Hospitals in North-Central Nigeria

open access: yesSouthern Clinics of Istanbul Eurasia, 2018
INTRODUCTION[|]Simulation software has aided the estimation of organ dose from computed tomography (CT) examinations. The aim of this study was to use the CT-Expo (SASCRAD, Fritz-Reuter-Weg, Buchholz, Germany) software to determine volume CT dose index ...
Mary-ann Etim Ekpo   +2 more
doaj   +1 more source

PERBANDINGAN VARIASI REDUCE DOSE DAN ITERATIVE RECONSTRUCTION (IR) DALAM MENENTUKAN MINIMALISASI DOSE LENGTH PRODUCT (DLP) DAN IMAGE NOISE CT SCAN KEPALA [PDF]

open access: yes, 2018
Background: Minimalization of Dose Length Product (DLP) and image noise can be obtained from the use of appropriate methods with the examination done. One method to minimize the radiation dose is Reduce Dose.
ULIL ALIIFAH PUTRI, 15161383046
core   +1 more source

Establishment of local diagnostic reference levels for common adult CT examinations: a multicenter survey in Addis Ababa

open access: yesBMC Medical Imaging, 2023
Background In medical imaging, a computed tomography (CT) scanner is a major source of ionizing radiation. All medical radiation exposures should be justified and optimized to meet the clinical diagnosis.
Marema Jebessa Kumsa   +5 more
doaj   +1 more source

Evaluation of Ultra-Low-Dose Chest CT Images to Detect Lung Lesions [PDF]

open access: yesMiddle East Journal of Cancer, 2022
Background: The present study was conducted to examine the possibility of detecting different types of lung lesions, such as cancer, using ultra-low dose (ULD) chest computed tomography (CT) images.
Reza Jalli   +7 more
doaj   +1 more source

Redefining Radiation Metrics: Evaluating Actual Doses in Computed Tomography Scans

open access: yesBiomedicines
Background: Computed tomography (CT) contributes significantly to the collective dose from medical sources, raising concerns about potential health risks.
Dominika Sabiniewicz-Ziajka   +4 more
doaj   +1 more source

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