Results 91 to 100 of about 104,884 (306)

The Application of Adaptive Time Gain Compensation in an Improved Breast Ultrasound Tomography Algorithm

Applied Sciences, 2019
In order to better detect information about a mass in breast tissue, an ultrasound tomography algorithm based on adaptive time gain compensation (TGC) was designed.
Chang Liu, Binzhen Zhang, Chenyang Xue, Guojun Zhang, Wendong Zhang, Yijun Cheng   +5 more
doaj   +1 more source

photoelectric attenuation coefficient

, 2014
Citation: 'photoelectric attenuation coefficient' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.P04602 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Upper Cervical Cord Area as a Biomarker of Conversion to Secondary Progressive Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective This study assessed whether upper cervical cord area (UCCA) measured on routine brain MRI can serve as a biomarker of conversion to SPMS. Methods This is a single‐center retrospective cohort study of RRMS patients with cross‐sectional and longitudinal analyses of clinical and MRI data. Future SPMS converters were matched by age, sex,
Nabil K. El Ayoubi, Sola Al Ghazal, Salem Hannoun, Medhat A. Siddik, Nour M. Najjar, Jim Dagher, Joseph Abboud, Myriam G. Semaan, Samia J. Khoury   +8 more
wiley   +1 more source

RPE-Normalized RNFL Attenuation Coefficient Maps Derived from Volumetric OCT Imaging for Glaucoma Assessment.

, 2012
PURPOSE. We present spatial retinal nerve fiber layer (RNFL) attenuation coefficient maps for healthy and glaucomatous eyes based on optical coherence tomography (OCT) measurements.
Vermeer, K.A., de Boer, J.F.; id_orcid, de Boer, J.F., van der Schoot, J.H., Lemij, H.G.   +4 more
core   +1 more source

The Multiple Sclerosis Severity Allele rs10191329A and Cognitive Function: A UK Biobank Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT The genome‐wide association study of Multiple Sclerosis severity linked the genetic variant rs10191329A to long‐term disability and implicated brain resilience as a determinant of outcome. We hypothesised that rs10191329A might influence cognition in other neurological diseases and healthy controls.
Ioanna Zimianiti, Sheena Waters, Adil Harroud, Pernilla Stridh, Ruth Dobson, Benjamin M. Jacobs   +5 more
wiley   +1 more source

Effect of gamma irradiation on the structure characteristics and mass attenuation coefficient of MgO nanoparticles

, 2018
In this work, the structure properties and mass attenuation coefficient of MgO nanoparticles were studied before and after gamma irradiation. The as-synthesized samples of MgO nanoparticles by sol–gel method were analyzed by XRD which suggested the ...
Maryam Amini, Alireza Vejdani Noghreiyan, Zahra Dehghani, Mohammad Hossein Majles Ara   +3 more
core   +1 more source

Mass attenuation coefficient of electromagnetic radiation for human tissues

Journal of Radiation Research and Applied Sciences
This study aims to calculate the electromagnetic radiation attenuation coefficients for various tissues (16) of the human body (Skeleton cortical bone, Brain, Blood, Lung, Heart, Liver, Muscle, Ovary, Thyroid, Spleen, Kidney, Pancreas, Skin, Eye lens ...
Shlair I. Mohammed, Ali H. Taqi
doaj   +1 more source

Clinical and Modifiable Factors Associated With Disability and Relapse in MOGAD: A Multicentre Cohort Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Factors associated with relapse course and disability in myelin oligodendrocyte glycoprotein antibody‐associated disease (MOGAD) remain incompletely understood. Objectives To identify clinical and modifiable factors associated with relapse and disability in MOGAD. Methods In this ambispective multicentre cohort study using data from
Yingtao Wang, Shaoxin Tao, Qiujia Wang, Xiaoyu Xu, Hui Yao, Zheng Liu, Dawei Li, Zhandong Qiu, Jinming Han, Jiangwei Xia, Qi Wang, Jun Sun, Kai Shao, Jiao Li, Shishuang Ruan, Yi Zhong, Jun Guo, Shougang Guo, Yue Huang, Guoliang Chai, Tao Jin, Hongyu Zhou, Junwei Hao, Yinan Zhao   +23 more
wiley   +1 more source

A Phantom-free Method to Image the Ultrasound Attenuation Coefficient Slope Using Decorrelated Compounding in Synthetic Transmit Aperture Ultrasound Imaging

, 2023
We propose a method that employs the decorrelated compounding method [Zhao2022DCjasael] to reduce speckle variation in ultrasound images for estimating the attenuation coefficient in Synthetic Transmit Aperture (STA) imaging. The transducer bandwidth was
Khalid Abdalla (17311822), Yuan Xu (14041857), Na Zhao (12157107)   +2 more
core   +1 more source

Triangular Index Ratio as an Alternative Method to the Alpha Angle for Defining the Presence of Cam Morphology: A Prospective Cohort Study

Arthritis Care &Research, EarlyView.
Objective Cam morphology, which is a significant risk factor for hip osteoarthritis, is commonly quantified by the alpha angle (AA). This study aims to explore the potential of the triangular index ratio (TIR) to quantify cam morphology on anteroposterior radiographs by assessing the association between TIR‐defined cam morphology and the development of
Jinchi Tang, Fleur Boel, Michiel M. A. van Buuren, Noortje S. Riedstra, Myrthe A. van den Berg, Jos Runhaar, Sita Bierma‐Zeinstra, Rintje Agricola   +7 more
wiley   +1 more source