Results 21 to 30 of about 1,238 (180)

Optimizing Radiation Dose in High-Resolution Chest CT: The Impact of Patient-Specific Factors and Size-Specific Dose Estimates [PDF]

Diagnostics
Background/Objectives: High-resolution chest computed tomography (HRCT) is a critical diagnostic tool, but radiation dose optimization remains a significant concern.
Mohamed Abuzaid
doaj   +2 more sources

Patient Dimensions From a Single CT Image Provide a Clinically Practical and Accurate Method for Dose Estimation in Canine Abdominal CT Imaging. [PDF]

Vet Radiol Ultrasound
ABSTRACT Size‐specific dose estimate (SSDE) uses linear dimensions measured on a computed tomographic (CT) image to scale the scanner‐reported volumetric computed tomography dose index (CTDIvol) and thereby estimate dose. The objectives of this retrospective observational study were to evaluate whether the American Association of Physicists in Medicine
Whittaker C, Mayer M, Hutcheson M, Sukut S.   +3 more
europepmc   +2 more sources

Effect of wearing a brassiere during low-dose chest CT for lung cancer screening. [PDF]

J Appl Clin Med Phys
Abstract Objective To assess the impact of wearing a brassiere during low‐dose chest CT (LDCT) examination on image quality and radiation dose. Methods A comparative study included 87 patients who underwent paired LDCT examinations at the Hospital from February 2022 to July 2024.
Cech M, Kocova E, Milerska I, Jandura J, Hyrsl M, Koziar Vasakova M, Ryska P.   +6 more
europepmc   +2 more sources

Investigation of Eye Lens Dose Estimate based on AAPM Report 293 in Head Computed Tomography [PDF]

Journal of Biomedical Physics and Engineering, 2021
Background: Estimation of eye lens dose is important in head computed tomography (CT) examination since the eye lens is a sensitive organ to ionizing radiation.
Choirul Anam, Winda Kusuma Dewi, Masdi Masdi, Freddy Haryanto, Toshioh Fujibuchi, Geoff Dougherty   +5 more
doaj   +1 more source

Size specific dose estimate (SSDE) for estimating patient dose from CT used in myocardial perfusion SPECT/CT [PDF]

Asia Oceania Journal of Nuclear Medicine and Biology, 2020
Objective(s): Size specific dose estimate (SSDE) is a new parameter that includes patient size factor in its calculation. Recent studies have produced mixed results on the utility of SSDE, especially when automatic exposure control (AEC) was used.
Vishnukumar Rajaraman, Madhusudhanan Ponnusamy, Dhanapathi Halanaik   +2 more
doaj   +1 more source

Improving the Quality of CT Images of Stroke Patients Using the SSDE and K-Means Segmentation in the Radiology Installation of RSUD A.W. Sjahranie Samarinda

Jurnal Fisika Flux
Stroke examination using a CT scan is a technique that produces 3D brain images without having to do surgery. The purpose of this study was to determine the dose received by each patient who underwent a CT-scan procedure and to improve the image quality ...
Erlinda Ratnasari Putri, Fransiska Lipa Payon, Ronel Arida Missinychrista, Devina Rayzy Perwitasari Sutaji Putri, Pratiwi Sri Wardani, Kadek Subagiada   +5 more
exaly   +3 more sources

Correlation of size specific dose estimates with organ dose in abdominal spectral computed tomography [PDF]

J Appl Clin Med Phys
Abstract Background In abdominal spectral Computed Tomography (CT), organ dose assessment is important for radiation safety but remains challenging due to the complexity of Monte Carlo (MC) simulations. Purpose This study aimed to compare the correlations of three size‐specific dose estimate (SSDE) metrics (including the central slice SSDEcenter, the ...
Qin T, Sun Q, Fan Y, Wang M, Wang J, Chang Y, Liang B.   +6 more
europepmc   +2 more sources

Analysis of Conjunctival Sac Microbiome in Dry Eye Patients With and Without Sjögren's Syndrome

Frontiers in Medicine, 2022
PurposeTo analyze the conjunctival sac microbial communities in patients with Sjögren's syndrome-associated dry eyes (SSDE) and non-Sjögren's syndrome-associated dry eyes (NSSDE), compared with normal controls (NC).MethodsConjunctival sac swab samples ...
Hang Song, Hang Song, Kang Xiao, Kang Xiao, Zhengyu Chen, Zhengyu Chen, Qin Long, Qin Long   +7 more
doaj   +1 more source

Upregulation of NLRP3 Inflammasome in the Tears and Ocular Surface of Dry Eye Patients. [PDF]

PLoS ONE, 2015
To evaluate the mRNA and protein expressions of NLRP3 inflammasome and its downstream inflammatory factors in human dry eye.We recruited 54 patients with Sjögren's syndrome dry eye (SSDE), 50 patients with non-Sjögren's syndrome dry eye (NSSDE), and 46 ...
Liangliang Niu, Shujie Zhang, Jihong Wu, Ling Chen, Yan Wang   +4 more
doaj   +1 more source

Multivariate analysis of effective dose and size-specific dose estimates for thorax and abdominal computed tomography

Journal of Medical Physics, 2023
The study aimed to compute the effective dose (E) and size-specific dose estimate (SSDE) of routine adult patients undergoing thorax and abdominal computed tomography (CT) imaging and to present their multivariate analysis. All adult thorax and abdominal
Mudasir Ashraf Shah, Mehtab Ahmad, Saifullah Khalid, Syed M Danish Qaseem, Shaista Siddiqui, Sayema Talib, Sajad Ahmed Rather, Arfat Firdous   +7 more
doaj   +1 more source