Results 11 to 20 of about 3,275,520 (334)
Review of methods and applications of attenuation coefficient measurements with optical coherence tomography. [PDF]
J Biomed Opt, 2019 . The optical attenuation coefficient (AC), an important tissue parameter that measures how quickly incident light is attenuated when passing through a medium, has been shown to enable quantitative analysis of tissue properties from optical coherence ...
Chang S, Bowden AK.
europepmc +4 more sources
Liver Fat Quantification With Ultrasound: Depth Dependence of Attenuation Coefficient
Journal of ultrasound in medicine, 2023 The primary aim was to estimate the influence of various depths on ultrasound attenuation coefficient (AC) of multiple vendors in the liver. The secondary aim was to evaluate the impact of region of interest (ROI) size on AC measurements in a subset of ...
G. Ferraioli +6 more
semanticscholar +1 more source
Remote Sensing, 2022 The diffuse attenuation coefficient of photosynthetically active radiation is an important inherent optical property of the subaquatic light field. This parameter, as a measure of the transparency of the medium, is a good indicator of water quality ...
Lien Rodríguez-López +5 more
semanticscholar +1 more source
Single-shot attenuation coefficient estimation for ultrasound contrast agents
Frontiers in Physics, 2022 Ultrasound contrast agents (UCAs) have broadened the scope of ultrasound imaging and therapeutic applications. One of the parameters of interest when measuring the response of UCAs to ultrasound is their frequency-dependent attenuation coefficient.
Jasleen Birdi +8 more
doaj +1 more source
System-Independent Ultrasound Attenuation Coefficient Estimation Using Spectra Normalization. [PDF]
IEEE Trans Ultrason Ferroelectr Freq Control, 2019 Ultrasound attenuation coefficient estimation (ACE) has diagnostic potential for clinical applications such as differentiating tumors and quantifying fat content in the liver.
Gong P +4 more
europepmc +2 more sources
New diagnostic technique to evaluate hepatic steatosis using the attenuation coefficient on ultrasound B mode. [PDF]
PLoS One, 2019 Purpose We have developed a diagnostic technique to evaluate hepatic steatosis using the attenuation coefficient (ATT) in ultrasound B mode imaging. A controlled attenuation parameter (CAP) by vibration-controlled transient elastography (VCTE) has also ...
Koizumi Y +7 more
europepmc +2 more sources
Gamma Radiation Shielding Properties of Slag and Fly Ash-based Geopolymers
Atom Indonesia, 2021 Industrial waste-based geopolymer cement is a greener alternative to Ordinary Portland Cement (OPC) for radiation shielding with comparable mechanical properties without the production of CO2 during synthesis.
M. W. Hasan +2 more
doaj +1 more source
Investigation of gamma radiation shielding features for modified structural materials for nuclear energy and nuclear medicine [PDF]
Nuclear Technology and Radiation Protection, 2023 In this paper, shielding characteristics of three concrete samples with different B4C,Fe3O4,and BaSO4 contents were examined by determining their theoretical and experimental mass attenuation coefficients at photon energies of 15 MeV.
Zaripova Yuliya +4 more
doaj +1 more source