Results 31 to 40 of about 173,456 (181)

Evaluation of Risk of Secondary Thyroid Cancer Caused by Neutron Dose Equivalent from Brain Tumor 3D-Conformal Radiation Therapy (3D-CRT)

open access: yesمجله دانشکده پزشکی اصفهان, 2020
Background: Thyroid cancer is one of the most common secondary malignancies as a result of receiving therapeutic doses to the head and neck. In this study, the probability of secondary thyroid cancer risk due to neutron contamination of 15 MV Siemens ...
Sohail Elmtalab   +3 more
doaj   +1 more source

Explore the Value of Dual Source Computer Tomography Automatic Tube Current Regulation in Reducing the Radiation Dose of CTA in Lower Extremity Vessels

open access: yesFrontiers in Surgery, 2022
ObjectiveTo investigate the value of dual source computer tomography automatic tube current regulation in reducing the radiation dose of CTA in lower limb vessels.MethodsFrom February 2020 to December 2021, 64 patients with lower limb artery CTA were ...
Xin Hu, Yi Yu
doaj   +1 more source

Thermoluminescent Characteristics of GR-200, TLD-700H and TLD-100 for Low Dose Measurement: Linearity, Repeatability, Dose Rate and Photon Energy Dependence [PDF]

open access: yesJournal of Biomedical Physics and Engineering, 2022
Background: The dose values obtained from procedures of diagnostic radiology are relatively low. To accurately and precisely measure the dose values in this dose range, it is necessary to know the characteristics of dosimeters.Objective: The aim of this ...
Mojgan Alizadeh   +5 more
doaj   +1 more source

An Alternative Radiation Shielding Material Based on Barium-Sulphate (BaSO4)-Modified Fly Ash Geopolymers

open access: yesGels, 2022
Geopolymers are a new environmentally friendly cementitious material, and the application of geopolymers can reduce the carbon dioxide emissions caused by the development of the cement industry.
Ammar A. Oglat, Sabri M. Shalbi
doaj   +1 more source

Optimization of PET protocol and interrater reliability of 18F-PSMA-11 imaging of prostate cancer [PDF]

open access: yes, 2020
Background Several scan parameters for PET imaging with F-18-PSMA-11 such as dosage, acquisition time and scan duration were evaluated to determine the most appropriate scan protocol, as well as the effect of furosemide administration on lesion ...
Achten, Eric   +7 more
core   +2 more sources

Dose Optimization Using a Deep Learning Tool in Various CT Protocols for Urolithiasis: A Physical Human Phantom Study

open access: yesMedicina, 2023
Background and Objectives: We attempted to determine the optimal radiation dose to maintain image quality using a deep learning application in a physical human phantom. Materials and Methods: Three 5 × 5 × 5 mm3 uric acid stones were placed in a physical
Jae Hun Shim   +3 more
doaj   +1 more source

Implementation of Individualized Low-Dose Computed Tomography-Guided Hook Wire Localization of Pulmonary Nodules: Feasibility and Safety in the Clinical Setting

open access: yesDiagnostics, 2023
Background: CT-guided hook-wire localization is an essential step in the management of small pulmonary nodules. Few studies, however, have focused on reducing radiation exposure during the procedure. Purpose: This study aims to explore the feasibility of
Wei Wei   +8 more
doaj   +1 more source

How significant is the radiation exposure during electrophysiology study and ablation procedures for supraventricular tachycardia?

open access: yesIndian Heart Journal, 2021
Radiation exposure during electrophysiology procedures has been a point of discussion. We measured the ionising radiation dosage during ablation procedures for supraventricular tachycardia.
Avishek Bagchi   +4 more
doaj  

مقایسه‌ی میانگین دز در واحد سطح در رادیوگرافی پانورامیک و مقطع‌نگاری رایانه‌ای با اشعه‌ی مخروطی در دو گروه سنی بزرگسالان و کودکان در استان یزد

open access: yesمجله دانشکده پزشکی اصفهان, 2020
مقدمه: دو روش رادیوگرافی شامل پانورامیک (Panoramic) و رادیوگرافی مقطع‌نگاری رایانه‌ای با اشعه‌ی مخروطی (Cone beam computed tomography یا CBCT) در راديولوژی دندانی کاربرد فراوانی دارد.
Hamed Zamani   +3 more
doaj   +1 more source

Evaluation of Image Quality, Organ Dose, Effective Dose and Cancer Risk in Pediatric Chest CT Procedure [PDF]

open access: yesمجله دانشکده پزشکی اصفهان, 2023
Background: The increasing frequency of pediatric chest CT scans has raised concerns regarding the radiation-induced cancer risks. The aim of this study was to evaluate image quality, organ doses, effective dose, and radiation-induced cancer risk from ...
Mahboobe Kiani   +2 more
doaj   +1 more source

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