Results 41 to 50 of about 133,969 (353)
Sensors, 2020 Currently there exists little knowledge or work in phantoms for the in-vitro evaluation of photoplethysmography (PPG), and its’ relationship with vascular mechanics.
Michelle Nomoni +2 more
doaj +1 more source
Effect of Spatial Modulated Light on Position of Self-Calibration Point
IEEE Photonics Journal, 2021 In optical sensing, the differentiation between absorption and scattering poses a challenge when dealing with a physiological medium. We have shown that for extracting absorption-based parameters it is optimal to measure at the iso-path length (IPL ...
Idit Feder, Hamootal Duadi, Dror Fixler
doaj +1 more source
Towards Accurate Dielectric Property Retrieval of Biological Tissues for Blood Glucose Monitoring [PDF]
, 2014 (c) 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works for resale or ...
Foster, R, Hao, Y, Yilmaz, T
core +1 more source
Analysis of a Flexible Dual-Channel Octagonal Coil System for UHF MRI
IEEE Access, 2022 Nowadays, MRI is focused on using ultra-high static magnetic fields (>7 T) to increase the signal-to-noise ratio. The use of high fields, on the other hand, requires novel technical solutions as well as more stringent design criteria for specific ...
Nicola Curreli +8 more
doaj +1 more source
Wormholes supported by a phantom energy [PDF]
Phys.Rev. D71 (2005) 043520, 2005 We extend the notion of phantom energy--which is generally accepted for homogeneously distributed matter with $w<-1$ in the universe--on inhomogeneous spherically symmetric spacetime configurations. A spherically symmetric distribution of phantom energy is shown to be able to support the existence of static wormholes.
arxiv +1 more source
Can universe exit from phantom inflation due to gravitational back reaction? [PDF]
JCAP 0605 (2006) 008, 2006 The effects of the gravitational back reaction of cosmological perturbations are investigated in a phantom inflation model. The effective energy-momentum tensor of the gravitational back reaction of cosmological perturbations whose wavelengths are larger than the Hubble radius is calculated.
arxiv +1 more source
Healthcare Technology Letters, 2019 Accurate medical Augmented Reality (AR) rendering requires two calibrations, a camera intrinsic matrix estimation and a hand-eye transformation. We present a unified, practical, marker-less, real-time system to estimate both these transformations during ...
Megha Kalia +4 more
doaj +1 more source
Utilizing Additive Manufacturing to Produce Organ Mimics and Imaging Phantoms
Surgeries, 2023 The complex geometries and material properties necessary for generating accurate organ mimics require new procedures and methods to fully utilize current technologies.
Dmitri Karaman, Stephanie M. Willerth
doaj +1 more source
Phantom Black Holes and Sigma Models [PDF]
Phys.Rev.D83:124001,2011, 2011 We construct static multicenter solutions of phantom Einstein-Maxwell-dilaton theory from null geodesics of the target space, leading to regular black holes without spatial symmetry for certain discrete values of the dilaton coupling constant. We also discuss the three-dimensional gravitating sigma models obtained by reduction of phantom Einstein ...
arxiv +1 more source
Diagnostics, 2021 Experimental evidence on testing a non-ultrasonic-based probe for a new approach in transluminal elastography was presented. The proposed modality generated shear waves by inducing oscillatory rotation on the lumen wall. Detection of the propagated waves
Antonio Gomez +5 more
doaj +1 more source