Results 1 to 10 of about 5,554,949 (261)

On the definition of signal-to-noise ratio and contrast-to-noise ratio for FMRI data. [PDF]

open access: yesPLoS ONE, 2013
Signal-to-noise ratio, the ratio between signal and noise, is a quantity that has been well established for MRI data but is still subject of ongoing debate and confusion when it comes to fMRI data.
Marijke Welvaert, Yves Rosseel
doaj   +5 more sources

Transparent Electrochromic Polymers with High Optical Contrast and Contrast Ratio

open access: yesJACS Au
Colored-to-transmissive electrochromic polymers, known for their wide selection of colors and solution processability, have gained great attraction in thin film electrochromic devices that have entered the market. However, their adoption in the real world is limited due to their limited optical transparency and contrast.
Zhiyang Wang   +5 more
doaj   +3 more sources

Quantitative Assessment of Bone Marrow Edema in Adolescent Athletes with Lumbar Spondylolysis Using Contrast Ratio on Magnetic Resonance Imaging [PDF]

open access: yesAsian Spine Journal, 2021
Study Design Prospective cohort study. Purpose To quantitatively evaluate bone marrow edema (BME) in the pedicle on magnetic resonance imaging (MRI) for adolescent athlete patients with spondylolysis.
Toshio Nakamae   +5 more
doaj   +1 more source

Contrastive Neural Ratio Estimation

open access: yesAdvances in Neural Information Processing Systems 35, 2022
Likelihood-to-evidence ratio estimation is usually cast as either a binary (NRE-A) or a multiclass (NRE-B) classification task. In contrast to the binary classification framework, the current formulation of the multiclass version has an intrinsic and unknown bias term, making otherwise informative diagnostics unreliable.
Benjamin Kurt Miller   +2 more
openaire   +6 more sources

Proposal of a Cascade Photonic Crystal XOR Logic Gate for Optical Integrated Circuits with Investigation of Fabrication Error and Optical Power Changes

open access: yesPhotonics, 2021
A compact and simple structure is designed to create an all-optical XOR logic gate using a two-dimensional, photonic crystal lattice. The structure was implemented using three waveguides connected by two nano-resonators.
Ahmad Mohebzadeh-Bahabady, Saeed Olyaee
doaj   +1 more source

Quantifying Bone Marrow Edema Adjacent to the Lumbar Vertebral Endplate on Magnetic Resonance Imaging: A Cross-Sectional Study of Patients with Degenerative Lumbar Disease [PDF]

open access: yesAsian Spine Journal, 2022
Study Design Cross-sectional study. Purpose We aimed to quantitatively assess bone marrow edema (BME) on magnetic resonance imaging (MRI) for patients with degenerative lumbar diseases.
Toshio Nakamae   +9 more
doaj   +1 more source

Optical Logic Gates Based on Z-Shaped Silicon Waveguides at 1.55 μm

open access: yesMicromachines, 2023
In the last ten years, silicon photonics has made considerable strides in terms of device functionality, performance, and circuit integration for a variety of practical uses, including communication, sensing, and information processing.
Amer Kotb   +3 more
doaj   +1 more source

Influence of contrast injection flux on the outcome of the angiotomography for the diagnosis of pulmonary embolism

open access: yesBrazilian Journal of Radiation Sciences, 2021
With the development of computed tomography, tomography examinations have been replacing other modalities of imaging tests. Computed tomography angiography to pulmonary thromboembolism, for example, has been replacing pulmonary scintigraphy of ...
Warley Ferreira Felix   +4 more
doaj   +1 more source

Display characteristics and their impact on digital pathology: A current review of pathologists' future “microscope”

open access: yesJournal of Pathology Informatics, 2020
Digital displays (monitors) are an indispensable component of a pathologists' daily workflow, from writing reports, viewing whole-slide images, or browsing the Internet.
Jacob T Abel   +9 more
doaj   +1 more source

A Stronger Aadaptive Local Dimming Method with Details Preservation

open access: yesApplied Sciences, 2020
Local dimming technology focuses on improving the contrast ratio of the displayed images for a great visual perception. It consists of backlight extraction and pixel compensation.
Tao Zhang   +4 more
doaj   +1 more source

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