Results 131 to 140 of about 1,253 (283)

Permutations of as Interleavers for Turbo Codes r p Z

open access: yes, 2020
Interleavers for error correcting codes are permutations of . Permutations of constructed from permutations of finite fields using monomials and the performance of Turbo Codes using them as interleavers have been studied by C. Corrada and I.
Joyce M Fernandez, Dr Ivelisse Rubio
core  

Pre‐Scan Breathing Pattern and Image Quality in Respiratory‐Triggered T2‐Weighted Liver MRI: Radial Versus Cartesian Fast Spin Echo

open access: yesJournal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background Respiratory‐triggered T2‐weighted imaging (T2WI) may use rectilinear sampling (respiratory‐triggered fast recovery fast spin echo [RT‐FRFSE]) or radial sampling (periodically rotated overlapping parallel lines with enhanced reconstruction [PROPELLER]). Their relative performance across breathing patterns is unclear.
Ho Sung Park   +6 more
wiley   +1 more source

Effects of Single and Multiple Dose Tiotropium/Olodaterol in Chronic Obstructive Pulmonary Disease on Alveolar Gas Exchange Measured by Hyperpolarized 129Xe MRI

open access: yesJournal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background Long‐acting muscarinic antagonists/long‐acting beta adrenoreceptor agonists lead to lung deflation and improved microvascular perfusion in hyperinflated chronic obstructive pulmonary disease (COPD), but with an unclear time course. Purpose To investigate the effect of inhalation of tiotropium/olodaterol (TIO/OLO) on MRI measures of ...
Agilo L. Kern   +7 more
wiley   +1 more source

Approaches to Computed Tomography Education for Radiography Students

open access: yesJournal of Medical Radiation Sciences, EarlyView.
The aim of this narrative review was to explore the current published literature relating to CT teaching methods and assessment of diagnostic radiography students during university training. Existing CT education evaluations focus on student satisfaction and usability of tools, with post‐lesson knowledge gains reported. Future work should shift towards
Yobelli Alexandra Jimenez   +5 more
wiley   +1 more source

Ultra‐High Frequency Ultrasound Imaging and Quantification of Microvascular Flow in Xenograft Renal Cell Carcinoma in an Avian Chorioallantoic Membrane Model

open access: yesJournal of Ultrasound in Medicine, EarlyView.
Patient‐derived xenograft (PDX) tumor models initiated in avian chorioallantoic membranes (CAM) are under investigation to evaluate the effectiveness of therapeutic options with the objective of personalizing treatments. CAM PDXs paired with ultra‐high frequency ultrasound (UHFUS) imaging could potentially constitute prospective high throughput assays ...
Sara Mar   +5 more
wiley   +1 more source

Practical interleavers for repeat-accumulate codes

open access: yes
In this paper we design practical interleavers for regular, systematic repeat-accumulate (RA) codes. The new interleavers, which we call L-type and modified L-type interleavers, are deterministic, described by a single parameter, and straightforward to ...
Sarah Johnson (21132320)   +1 more
core  

Interleavers For Punctured Turbo Codes.

open access: yes, 1998
Puncturing is a way of increasing the code rate by deleting one or more parity bits in a code word without an increase in complexity. Puncturing is applied to the Turbo code scheme of Berrou et al.
Steven S. Pietrobon   +2 more
core  

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