Results 31 to 40 of about 264,517 (319)

Impact of dose reduction and iterative model reconstruction on multi-detector CT imaging of the brain in patients with suspected ischemic stroke

open access: yesScientific Reports, 2021
Non-contrast cerebral computed tomography (CT) is frequently performed as a first-line diagnostic approach in patients with suspected ischemic stroke.
Karolin J. Paprottka   +8 more
doaj   +1 more source

Adaptive self‐calibrating iterative GRAPPA reconstruction [PDF]

open access: yesMagnetic Resonance in Medicine, 2011
AbstractParallel magnetic resonance imaging in k‐space such as generalized auto‐calibrating partially parallel acquisition exploits spatial correlation among neighboring signals over multiple coils in calibration to estimate missing signals in reconstruction.
Suhyung, Park, Jaeseok, Park
openaire   +2 more sources

Subjective and objective evaluation of 10–30% dose reduced coronary artery phantom scans reconstructed with Forward projected model-based Iterative Reconstruction SoluTion (FIRST)

open access: yesData in Brief, 2017
The data presented in this articles are related to the research article entitled “The feasibility of Forward-projected model-based Iterative Reconstruction SoluTion (FIRST) for coronary 320-row computed tomography angiography: a pilot study” (E. Maeda, N.
Eriko Maeda   +7 more
doaj   +1 more source

3D reconstruction of magnetization from dichroic soft X-ray transmission tomography [PDF]

open access: yes, 2018
The development of magnetic nanostructures for applications in spintronics requires methods capable of visualizing their magnetization. Soft X‐ray magnetic imaging combined with circular magnetic dichroism allows nanostructures up to 100–300 nm in ...
Alvarez-Prado, Luis Manuel   +10 more
core   +1 more source

Usefulness of Model-Based Iterative Reconstruction in Brain CT as Compared With Hybrid Iterative Reconstruction [PDF]

open access: yesJournal of Computer Assisted Tomography, 2021
Objective The aim of this study was to compare the contrast of gray to white matter between forward-projected model-based iterative reconstruction solution (FIRST) and hybrid iterative reconstruction (IR) by measuring computed tomography value of brain parenchyma.
Hirofumi, Sekino   +10 more
openaire   +2 more sources

Image quality with iterative reconstruction techniques in CT of the lungs—A phantom study

open access: yesEuropean Journal of Radiology Open, 2018
Background: Iterative reconstruction techniques for reducing radiation dose and improving image quality in CT have proved to work differently for different patient sizes, dose levels, and anatomical areas.
Hilde Kjernlie Andersen   +2 more
doaj   +1 more source

A Multi-Grid Iterative Method for Photoacoustic Tomography [PDF]

open access: yes, 2016
Inspired by the recent advances on minimizing nonsmooth or bound-constrained convex functions on models using varying degrees of fidelity, we propose a line search multigrid (MG) method for full-wave iterative image reconstruction in photoacoustic ...
Holman, Sean, Javaherian, Ashkan
core   +3 more sources

Phase Reconstruction with Iterated Hilbert Transforms [PDF]

open access: yes, 2021
We present a study dealing with a novel phase reconstruction method based on iterated Hilbert transform embeddings. We show results for the Stuart-Landau oscillator observed by generic observables. The benefits for reconstruction of the phase response curve a presented and the method is applied in a setting where the observed system is pertubred by ...
Gengel, Erik, Pikovsky, Arkady
openaire   +2 more sources

Iterative Forward-Backward Pursuit Algorithm for Compressed Sensing

open access: yesJournal of Electrical and Computer Engineering, 2016
It has been shown that iterative reweighted strategies will often improve the performance of many sparse reconstruction algorithms. Iterative Framework for Sparse Reconstruction Algorithms (IFSRA) is a recently proposed method which iteratively enhances ...
Feng Wang   +3 more
doaj   +1 more source

Model-Based Iterative Reconstruction (MBIR) for ASPECT Scoring in Acute Stroke Patients Selection: Comparison to rCBV and Follow-Up Imaging

open access: yesTomography, 2022
Background: To compare a model-based iterative reconstruction (MBIR) versus a hybrid iterative reconstruction (HIR) for initial and final Alberta Stroke Program Early Ct Score (ASPECT) scoring in acute ischemic stroke (AIS).
Brieg Dissaux   +3 more
doaj   +1 more source

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