Results 21 to 30 of about 533,442 (291)
Advanced Science, 2023 The signal‐to‐noise ratio (SNR) is one of the key features of a fluorescent probe and one that often defines its potential utility for in vivo labeling and analyte detection applications.
Yongkang Yue +9 more
doaj +1 more source
Results in Physics, 2023 In this work, it is demonstrated that metamaterial lenses can help to increase the signal-to-noise ratio of magnetic resonance imaging coils in low-field magnetic resonance imaging systems.
Manuel J. Freire +2 more
doaj +1 more source
Impact of 3 Tesla MRI on interobserver agreement in clinically isolated syndrome: A MAGNIMS multicentre study [PDF]
, 2018 Compared to 1.5 T, 3 T magnetic resonance imaging (MRI) increases signal-to-noise ratio leading to improved image quality. However, its clinical relevance in clinically isolated syndrome suggestive of multiple sclerosis remains ...
Amann, M +23 more
core +4 more sources
A Few Photons Among Many: Unmixing Signal and Noise for Photon-Efficient Active Imaging [PDF]
, 2016 Conventional LIDAR systems require hundreds or thousands of photon detections to form accurate depth and reflectivity images. Recent photon-efficient computational imaging methods are remarkably effective with only 1.0 to 3.0 detected photons per pixel ...
Goyal, Vivek K, Rapp, Joshua
core +1 more source
Feeble-light ghost imaging via correlation calculation
Results in Physics, 2023 Noise is a significant factor affecting imaging quality because it seriously reduces the detection signal-to-noise ratio (SNR), especially in feeble-light detection. In this paper, we propose a practical method to separate signal from noise background in
Wei Tan +8 more
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Sensitive Absorption Imaging of Single Atoms in Front of a Mirror [PDF]
, 2013 In this paper we show that the sensitivity of absorption imaging of ultracold atoms can be significantly improved by imaging in a standing-wave configuration.
Spreeuw, Robert J. C. +1 more
core +3 more sources
Signal-to-noise ratio limitations for intensity correlation imaging
Journal of the Optical Society of America A, 2014 Intensity correlation imaging (ICI) is a concept which has been considered for the task of providing images of satellites in geosynchronous orbit using ground-based equipment. This concept is based on the intensity interferometer principle first developed by Hanbury Brown and Twiss.
Fried, David L. +2 more
openaire +3 more sources
Sensors, 2022 The signal-to-noise ratio (SNR) is an important performance evaluation index of polarization spectral imaging remote sensors. The SNR-estimation method based on the existing remote sensor is not perfect.
Ying Zhang +5 more
doaj +1 more source
Size-optimized 32-channel brain arrays for 3 T pediatric imaging [PDF]
, 2011 Size-optimized 32-channel receive array coils were developed for five age groups, neonates, 6 months old, 1 year old, 4 years old, and 7 years old, and evaluated for pediatric brain imaging.
Almli +21 more
core +2 more sources
Improving photoacoustic imaging in low signal-to-noise ratio by using spatial and polarity coherence
Photoacoustics, 2022 To suppress the noise and sidelobe of photoacoustic images, a method is proposed combined with spatial coherence and polarity coherence. In this method, PA signals are delayed, multiplied, then performed polarity coherence, and finally summed.
Qiuqin Mao +4 more
doaj +1 more source