Results 11 to 20 of about 5,652,430 (282)

Estimation of absorbed dose of the thyroid gland in patients undergoing 64-slice head computed tomography and comparison the results with ImPACT software and computed tomography scan dose index

Journal of Medical Signals and Sensors, 2019
Thyroid exposure to radiation in brain computed tomography (CT) scan is of great value since it is considered as a vital organ. This study aimed to investigate the absorbed dose of thyroid by various protocols of head CT in patients referring to 64-slice
Asghar Maziar, Reza Paydar, Ghazal Azadbakht, Daryoush Shahbazi-Gahrouei   +3 more
doaj   +3 more sources

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

Journal 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, Ehsan, Mihandoost, Mehran, Mohseni   +2 more
openaire   +3 more sources

Using body mass index to estimate individualised patient radiation dose in abdominal computed tomography

European Radiology Experimental, 2018
Background The size-specific dose estimate (SSDE) is a dose-related metrics that incorporates patient size into its calculation. It is usually derived from the volume computed tomography dose index (CTDIvol) by applying a conversion factor determined ...
Siobhan O’Neill, Richard G. Kavanagh, Brian W. Carey, Niamh Moore, Michael Maher, Owen J. O’Connor   +5 more
doaj   +3 more sources

Relationship between Water-equivalent Diameter, Computed Tomography Dose Indices, and Image Noise in Pediatric Head Computed Tomography Under Active and Inactive Tube Current Modulation [PDF]

Journal of Medical Physics
Purpose: This study investigated the relationships among water-equivalent diameter (Dw), volume computed tomography dose index (CTDIvol), size-specific dose estimate (SSDE), and image noise in pediatric head computed tomography (CT) under active and ...
Evi Setiawati, Choirul Anam, Bella Diani Safitri, Much Azam, Qidir Maulana Binu Soesanto, Agus Margiantono   +5 more
doaj   +2 more sources

The Decision Process of Notification Value by the Dose Index Registry System in X-ray Computed Tomography

Japanese Journal of Radiological Technology, 2014
A new technical standard for X-ray computed tomography (CT) has been published by the National Electrical Manufacturers Association (NEMA) that allows the Alert Value and Notification Value for cumulative dose to be configurable by CT systems operators in conjunction with the XR-25 (Dose check) standard.
Yoshihisa Muramatsu
exaly   +4 more sources

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

Iranian 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

Impact of body mass index on the reliability of the CT0–4 grading system: a comparison of computed tomography protocols [PDF]

Digital Diagnostics, 2022
BACKGROUND: The increased frequency of chest computed tomography utilization in the fight against COVID-19 has made usage of low-dose computed tomography necessary to reduce the radiation dose while preserving diagnostic quality.
Ivan A. Blokhin, Anna P. Gonchar, Maria R. Kodenko, Alexander V. Solovev, Victor A. Gombolevskiy, Roman V. Reshetnikov   +5 more
doaj   +1 more source

Development, construction, and evaluation of an alternative dosimetry phantom for computed tomography

Journal of Medical Physics, 2023
This article aims to present the development, construction, and evaluation of an alternative computed tomography dose index (CTDI) phantom. Epoxy resin was mixed with an iodine-based contrast agent to produce radiological characteristics resembling ...
Lukmanda Evan Lubis, Windi Dliya Najmah, Yuni Muliyanti, Ika Hariyati, Dea Ryangga, Terry Mart, Hilde Bosmans, Djarwani Soeharso Soejoko   +7 more
doaj   +1 more source

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

UMYU 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, Gide Muhammad Bashir, Rufa’i Usman Ahmed   +2 more
doaj   +1 more source

Establishment of Diagnostic Reference Levels for Computed Tomography Scanning in Hamadan [PDF]

Journal of Biomedical Physics and Engineering, 2020
Background: New advancements have increased the capabilities of computed tomography as a sectional medical imaging modality. An important note is assessing absorbed dose to patients and minimizing it when performing computed tomography examinations.
S Jafari, K Ghazikhanlu Sani, M Karimi, H Khosravi, R Goodarzi, M Pourkaveh   +5 more
doaj   +1 more source