Results 31 to 40 of about 257,977 (271)

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

European 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, David Völgyes, Anne Catrine Trægde Martinsen   +2 more
doaj   +1 more source

Iterative Forward-Backward Pursuit Algorithm for Compressed Sensing

Journal 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, Jianping Zhang, Guiling Sun, Tianyu Geng   +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

Tomography, 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, Mourad Cheddad El Aouni, Julien Ognard, Jean-Christophe Gentric   +3 more
doaj   +1 more source

State of the art: iterative CT reconstruction techniques [PDF]

, 2015
Owing to recent advances in computing power, iterative reconstruction (IR) algorithms have become a clinically viable option in computed tomographic (CT) imaging. Substantial evidence is accumulating about the advantages of IR algorithms over established
Bastarrika, Gorka, DE CECCO, CARLO NICOLA, Geyer, Lucas L., LAGHI, ANDREA, Leipsic, Jonathon A., Meinel, Felix G., Nance, John W., Paul, Narinder S., RENGO, MARCO, Schoepf, U. Joseph   +9 more
core   +1 more source

Comparing Deep Learning Frameworks for Photoacoustic Tomography Image Reconstruction

Photoacoustics, 2021
Conventional reconstruction methods for photoacoustic images are not suitable for the scenario of sparse sensing and geometrical limitation. To overcome these challenges and enhance the quality of reconstruction, several learning-based methods have ...
Ko-Tsung Hsu, Steven Guan, Parag V. Chitnis   +2 more
doaj   +1 more source

PET reconstruction artifact can be minimized by using sinogram correction and filtered back-projection technique

Indian Journal of Radiology and Imaging, 2014
Filtered Back-Projection (FBP) has become an outdated image reconstruction technique in new-generation positron emission tomography (PET)/computed tomography (CT) scanners.
Ashish Kumar Jha, Nilendu C Purandare, Sneha Shah, Archi Agrawal, Ameya D Puranik, Venkatesh Rangarajan   +5 more
doaj   +1 more source

Family Constraining of Iterative Algorithms

, 2013
In constraining iterative processes, the algorithmic operator of the iterative process is pre-multiplied by a constraining operator at each iterative step.
Censor, Yair, Pantelimon, Ioana, Popa, Constantin   +2 more
core   +1 more source

Characteristics of Cerebral Palsy in the Midwestern US

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Cerebral palsy (CP) is the most common lifelong motor disability worldwide. Yet, data is limited on how CP manifests in the US. Our objective was to characterize and determine factors affecting functional outcomes in a large population of young people with CP in the Midwestern US.
Susie Kim, Kelsey Steffen, Lauren Gottschalk‐Henneberry, Jennifer Miros, Amy Robichaux‐Viehoever, Karen Taca, Bhooma R. Aravamuthan   +6 more
wiley   +1 more source

Fused Analytical and Iterative Reconstruction (AIR) via modified proximal forward-backward splitting: a FDK-based iterative image reconstruction example for CBCT

, 2016
This work is to develop a general framework, namely analytical iterative reconstruction (AIR) method, to incorporate analytical reconstruction (AR) method into iterative reconstruction (IR) method, for enhanced CT image quality and reconstruction ...
Gao, Hao
core   +1 more source

Altered Dynamic Functional Network Connectivity in Post‐Stroke Aphasia

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Previous studies examining post‐stroke aphasia (PSA) patients via resting‐state functional magnetic resonance imaging (rs‐fMRI) have predominantly focused on static functional connectivity. In contrast, the current investigation aims to elucidate the alterations in dynamic functional network connectivity (dFNC) among PSA patients ...
Guihua Xu, Yongsheng Wu, Junyu Qu, Rui Zhu, Wenwen Xu, Jiaxiang Xin, Dawei Wang   +6 more
wiley   +1 more source