Results 31 to 40 of about 138,343 (192)
Frontiers in Neuroscience, 2016 Purpose: Diffusion MRI provides a non-invasive way of estimating structural connectivity in the brain. Many studies have used diffusion phantoms as benchmarks to assess the performance of different tractography reconstruction algorithms and assumed that ...
Sarah D. Lichenstein +5 more
doaj +1 more source
A Framework for Directional and Higher-Order Reconstruction in Photoacoustic Tomography [PDF]
, 2017 Photoacoustic tomography is a hybrid imaging technique that combines high optical tissue contrast with high ultrasound resolution. Direct reconstruction methods such as filtered backprojection, time reversal and least squares suffer from curved line ...
Boink, Yoeri E. +5 more
core +6 more sources
Biomedical Journal, 2019 Background: The purpose of the study is to evaluate the reproducibility and repeatability of the compartmental diffusion measurement. Methods: Two identical whipping cream phantoms and two healthy Sprague–Dawley rats were scanned on a 7T MR scanner, each
Yao-Liang Chen +6 more
doaj +1 more source
A Rotational Cylindrical fMRI Phantom for Image Quality Control. [PDF]
PLoS ONE, 2015 A novel phantom for image quality testing for functional magnetic resonance imaging (fMRI) scans is described.The cylindrical, rotatable, ~4.5L phantom, with eight wedge-shaped compartments, is used to simulate rest and activated states. The compartments
David A Tovar, Wang Zhan, Sunder S Rajan
doaj +1 more source
Digital mouse phantom for optical imaging
Journal of Biomedical Optics, 2007 We present a method for design and use of a digital mouse phantom for small animal optical imaging. We map the boundary of a mouse model from magnetic resonance imaging (MRI) data through image processing algorithms and discretize the geometry by a finite element (FE) descriptor.
Shekhar, Dwivedi +2 more
openaire +2 more sources
Fast Monte Carlo Simulation for Patient-specific CT/CBCT Imaging Dose Calculation
, 2011 Recently, X-ray imaging dose from computed tomography (CT) or cone beam CT (CBCT) scans has become a serious concern. Patient-specific imaging dose calculation has been proposed for the purpose of dose management.
Briesmeister J F +23 more
core +1 more source
Iterative CT reconstruction using shearlet-based regularization [PDF]
, 2012 In computerized tomography, it is important to reduce the image noise without increasing the acquisition dose. Extensive research has been done into total variation minimization for image denoising and sparse-view reconstruction. However, TV minimization
Goossens, Bart +6 more
core +1 more source
, 2011 International audienceCombining the advantages of different imaging modalities leads to improved clinical results. For example, ultrasound provides good real-time structural information without any radiation and PET provides sensitive functional ...
Auffray, Etiennette +10 more
core +2 more sources
Validation of the GATE Monte Carlo simulation platform for modelling a CsI(Tl) scintillation camera dedicated to small animal imaging [PDF]
, 2004 Monte Carlo simulations are increasingly used in scintigraphic imaging to model imaging systems and to develop and assess tomographic reconstruction algorithms and correction methods for improved image quantitation.
Breton, V. +11 more
core +3 more sources
iPads in Breast Imaging – A Phantom Study [PDF]
Geburtshilfe und Frauenheilkunde, 2014 Introduction: Modern tablet PCs as the iPad are becoming more and more integrated into medicine. The aim of this study was to evaluate the display quality of iPads regarding digital mammography. Materials and Methods: Three experienced readers compared the display quality of the iPad 2 and 3 with a dedicated 10 megapixel (MP) mammography liquid crystal
M, Hammon +4 more
openaire +2 more sources