Results 1 to 10 of about 3,306,600 (250)
Volumetric Density-Equalizing Reference Map with Applications [PDF]
Journal of Scientific Computing, 2021 The density-equalizing map, a technique developed for cartogram creation, has been widely applied to data visualization but only for 2D applications. In this work, we propose a novel method called the volumetric density-equalizing reference map (VDERM) for computing density-equalizing map for volumetric domains.
Gary P. T. Choi, Chris H. Rycroft
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High-density volumetric super-resolution microscopy [PDF]
Nature Communications, 2023 Volumetric super-resolution microscopy typically encodes the 3D position of single-molecule fluorescence into a 2D image by changing the shape of the point spread function (PSF) as a function of depth. However, the resulting large and complex PSF spatial footprints reduce temporal resolution by requiring lower labelling densities to ...
Sam Daly +13 more
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Volumetric mass density measurements of mesenchymal stem cells in suspension using a density meter
iScience, 2022 SummaryTo use regenerative cell types for cell therapeutic applications, cells need to be isolated from their resident tissues. Different isolation procedures put different amounts of mechanical strain on these cells, which influences their yield of cell number and viability. For experimental and numerical optimization of these procedures, knowledge of
Christoph Drobek +5 more
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Ionizing radiation and volumetric mammographic density
International Journal of Occupational Medicine and Environmental Health, 2022 Mammographic density (MD) refers to the percentage of dense tissue of an entire breast and was proposed to be used as a surrogate marker for breast cancer. High-dose ionizing radiation (IR) has been recognized as a breast cancer risk factor. The aim of our study was to investigate association between lifetime low dose ionizing radiation (LDIR) and MD.A
Beata Pepłońska +3 more
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Gradient-domain volumetric photon density estimation [PDF]
ACM Transactions on Graphics, 2018 Gradient-domain rendering can improve the convergence of surface-based light transport by exploiting smoothness in image space. Scenes with participating media exhibit similar smoothness and could potentially benefit from gradient-domain techniques. We introduce the first gradient-domain formulation of image synthesis with homogeneous participating ...
Gruson, Adrien +4 more
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Mammographic Density Estimation with Automated Volumetric Breast Density Measurement [PDF]
Korean Journal of Radiology, 2014 To compare automated volumetric breast density measurement (VBDM) with radiologists' evaluations based on the Breast Imaging Reporting and Data System (BI-RADS), and to identify the factors associated with technical failure of VBDM.In this study, 1129 women aged 19-82 years who underwent mammography from December 2011 to January 2012 were included ...
Ko, Su Yeon +3 more
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High‐Density Lignin‐Derived Carbon Nanofiber Supercapacitors with Enhanced Volumetric Energy Density [PDF]
Advanced Science, 2021 AbstractSupercapacitors are increasingly used in short‐distance electric transportation due to their long lifetime (≈15 years) and fast charging capability (>10 A g−1). To improve their market penetration, while minimizing onboard weight and maximizing space‐efficiency, materials costs must be reduced (<10 $ kg−1) and the volumetric energy ...
Servann Hérou +8 more
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Photon surfaces for robust, unbiased volumetric density estimation [PDF]
ACM Transactions on Graphics, 2019 We generalize photon planes to photon surfaces : a new family of unbiased volumetric density estimators which we combine using multiple importance sampling. To derive our new estimators, we start with the extended path integral which duplicates the vertex at the end of the camera and photon subpaths and couples them
Xi Deng +3 more
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Determinants of volumetric breast density in Chilean premenopausal women
Breast Cancer Research and Treatment, 2017 High mammographic breast density (BD) is a strong risk factor of breast cancer; however, little is known in women under 40 years of age. Recently, dual-energy X-ray Absorptiometry (DXA) has been developed as a low-dose method to measure BD in young populations.
Pereira, Ana +6 more
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Optimization of volumetric breast density estimation in digital mammograms
Physics in Medicine & Biology, 2017 Abstract Fibroglandular tissue volume and percent density can be estimated in unprocessed mammograms using a physics-based method, which relies on an internal reference value representing the projection of fat only. However, pixels representing fat only may not be present in dense breasts, causing an underestimation of density ...
Holland, K. +3 more
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