Results 91 to 100 of about 5,341 (200)

Investigation and Analysis of Radiation Dose and Typical Values in Adult Computed Tomography Examinations

CT Lilun yu yingyong yanjiu
Objective: This study aimed to investigate the radiation dose levels and typical values of computed tomography (CT) devices in our unit, providing a basis for optimizing radiation protection.
Bin ZHANG, Jingbo DU, Boyang ZHANG, Shuo TONG, Xueyan KUI, Taoran FENG, Hailong YANG, Jianyong LIAO, Yongxian ZHANG   +8 more
doaj   +1 more source

Volume Computed Tomography Dose Index (CTDIvol) and Size-Specific Dose Estimate (SSDE) for Tube Current Modulation (TCM) in CT Scanning

, 2018
Background: In the tube current modulation (TCM) technique, tube current is changed dynamically during the scanning process. To quantify the effect of a dynamic tube current, a distinct calculator is needed to estimate the CT output radiation dose in ...
Geoff Dougherty
core  

Radiation dose differences between thoracic radiotherapy planning CT and thoracic diagnostic CT scans [PDF]

, 2016
Purpose: To compare the absorbed dose from computed tomography (CT) in radiotherapy planning (RP CT) against those from diagnostic CT (DG CT) examinations and to explore the possible reasons for any dose differences.Method: Two groups of patients ...
Hogg, P, England, A, Fosså, K, Johansen, S, Svensson, S, Sanderud, A, Svensson, SF   +6 more
core   +1 more source

Assessment of Volumetric Computed Tomography Dose Index (CTDIvol) for selected computed tomography scanners in Uganda

Abstract The Atomic Energy Council conducted routine inspections on 42 facilities with Computed Tomography (CT) scanners in Uganda to verify the compliance of their CTDIvol with the established regulatory machine performance standards. The findings of the inspections revealed that most scanners complied with the recommended regulatory dose ...
Wellen Rukundo, Lynn Ninsiima, Natharius Nimbashabira, Noah Deogratias Luwalira   +3 more
openaire   +1 more source

The establishment of local diagnostic reference levels for computed tomography cerebral angiography in Jeddah city of Saudi Arabia

The Egyptian Journal of Radiology and Nuclear Medicine
Purpose Cerebral computed tomography angiography (CTA) is a useful imaging modality for the diagnosis of blood vessels in brain diseases. The aim of this study was to assess the radiation dose and risk estimation for cerebral CTA scans for adult patients
Khadijah khan, Afnan Al-Harbi, Alaa Fallatah, Mohamed Alasmary, Younis Bokhary, Marwan Alhazmi, Saeed Al-Qahtani, Abdulwali Ajlouni, Emtenan Alotaibi, Ali Alomari, Marwan Althomali, Merfat Algethami, Omemh Bawazeer   +12 more
doaj   +1 more source

PENENTUAN NILAI TIPIKAL PADA PEMERIKSAAN CT-SCAN BAGIAN HEAD, CHEST, DAN ABDOMEN DI RSUP Dr. M. DJAMIL PADANG [PDF]

, 2023
Telah dilakukan penelitian tentang penentuan nilai tipikal pada Computed Tomography Scanner (CT-Scan) di RSUP Dr. M. Djamil Padang. Penelitian bertujuan untuk menentukan, mengevaluasi, membandingkan, dan menganalisis nilai tipikal terhadap indikator ...
Wafi, Muthia Dewanti
core  

Diagnostic reference levels of radiation dose using computed tomography for patients with acute renal pain in Mansoura

The Egyptian Journal of Radiology and Nuclear Medicine
Background Non-contrast computed tomography (NCCT) is the preferred imaging modality for the initial and further investigations of patients with renal colic.
Hoda Abdelrouf, Tarek El-Diasty, Ayman Mokhtar, Walid Moslem, Mosad El-Metwally, Fatma Sherif, Eslam Kamal   +6 more
doaj   +1 more source

The Effect of Increased Tube Tension in Head and Neck Scans on CTDIvol and Critical Organ Doses: A Monte Carlo-Based Evaluation

Advances in Medical Pyhsics and Applied Sciences
The aim of this study is to evaluate the effect of different tube voltage (kVp) values on organ doses in head and neck computed tomography (CT) protocols using a 3-month pregnant female phantom via the VirtualDose™CT software. Organ doses were simulated using VirtualDose™CT by selecting the GE LightSpeed Pro 16 scanner model.
Turan ŞAHMARAN, Süreyya NUR
openaire   +1 more source

Higher Radiation Doses in Adult Brain CT: A Multi-Center DRL Study from Jordan Compared with International Benchmarks

Health Research in Africa
Introduction. Diagnostic reference levels (DRLs) are essential tools for optimizing radiation dose in computed tomography (CT) imaging, yet many countries lack national benchmarks.
Ehab Ababneh, Ahmad Abu Alfwares
doaj   +1 more source

Measurement of axial dose profile for wide detector CT using radiochromic films

Scientific Reports
To investigate the application of radiochromic film LD-V1 for measuring the dose profile of wide detector CT and comparing the measurements with the console-displayed CTDIvol, with the aim of obtaining correction factors.
Yihan Fan, Tian Qin, Qingting Sun, Mengting Wang, Jing Wang, Baohui Liang   +5 more
doaj   +1 more source