Results 51 to 60 of about 2,962,605 (298)

Sparsity prior for electrical impedance tomography with partial data [PDF]

open access: yes, 2014
This paper focuses on prior information for improved sparsity reconstruction in electrical impedance tomography with partial data, i.e. data measured only on subsets of the boundary.
Garde, Henrik, Knudsen, Kim
core   +1 more source

Simulation of Leksell Gamma Knife-4C System with Different Phantoms Using PHITS and Geant4

open access: yesAtom Indonesia, 2023
This study used PHITS and Geant4 code packages to simulate a Leksell Gamma Knife system in order to determine radiation dose distribution in two types of phantoms.
B. T. Hung, T. T. Duong, B. N. Ha
doaj   +1 more source

Stochastic three-dimensional numerical phantoms to enable computational studies in quantitative optoacoustic computed tomography of breast cancer

open access: yesJournal of Biomedical Optics, 2023
. Significance When developing a new quantitative optoacoustic computed tomography (OAT) system for diagnostic imaging of breast cancer, objective assessments of various system designs through human trials are infeasible due to cost and ethical concerns.
Seonyeong Park   +5 more
semanticscholar   +1 more source

Image reconstruction from scattered Radon data by weighted positive definite kernel functions [PDF]

open access: yes, 2018
We propose a novel kernel-based method for image reconstruction from scattered Radon data. To this end, we employ generalized Hermite–Birkhoff interpolation by positive definite kernel functions. For radial kernels, however, a straightforward application
De Marchi, S., Iske, A., Santin, G.
core   +1 more source

Head phantoms for electroencephalography and transcranial electric stimulation: a skull material study

open access: yes, 2018
Physical head phantoms allow assessing source reconstruction procedures in electroencephalography and electrical stimulation profiles during transcranial electric stimulation. Volume conduction in the head is strongly influenced by the skull representing
Fiedler, Patrique   +3 more
core   +1 more source

Effect of variability of human bone morphometric parameters on the uncertainty of internal bone marrow doses due to 90Sr

open access: yesРадиационная гигиена
Computational phantoms are used to calculate the doses of internal exposure of active bone marrow. The computational phantoms of ICRP were created for a reference man with anatomical characteristics typical of an average individual.
E. A. Shishkina   +2 more
doaj   +1 more source

Automatic Synthesis of Anthropomorphic Pulmonary CT Phantoms. [PDF]

open access: yesPLoS ONE, 2016
The great density and structural complexity of pulmonary vessels and airways impose limitations on the generation of accurate reference standards, which are critical in training and in the validation of image processing methods for features such as ...
Daniel Jimenez-Carretero   +3 more
doaj   +1 more source

Broadband Tissue Mimicking Phantoms and a Patch Resonator for Evaluating Noninvasive Monitoring of Blood Glucose Levels [PDF]

open access: yes, 2014
(c) 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, 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

Homogeneous Canine Chest Phantom Construction: A Tool for Image Quality Optimization. [PDF]

open access: yesPLoS ONE, 2016
Digital radiographic imaging is increasing in veterinary practice. The use of radiation demands responsibility to maintain high image quality. Low doses are necessary because workers are requested to restrain the animal.
Ana Luiza Menegatti Pavan   +8 more
doaj   +1 more source

Comparing D-Bar and Common Regularization-Based Methods for Electrical Impedance Tomography [PDF]

open access: yes, 2019
Objective: To compare D-bar difference reconstruction with regularized linear reconstruction in electrical impedance tomography. Approach: A standard regularized linear approach using a Laplacian penalty and the GREIT method for comparison to the D-bar ...
Adler, A.   +2 more
core   +2 more sources

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