Results 31 to 40 of about 536,964 (293)
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
Long phosphorescence properties of iridium complexes with different N^N ligands
上海师范大学学报. 自然科学版, 2020 Long phosphorescence imaging eliminates the real-time light irradiation and gets a higher signal-to-noise ratio than traditional fluorescence imaging.
HOU Yutong +3 more
doaj +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
doaj +1 more source
Signal‐to‐Noise Ratio as a Function of Imaging Parameters [PDF]
Current Protocols in Magnetic Resonance Imaging, 2002 AbstractSignal‐to‐Noise Ratio as a Function of Imaging Parameters (Azim Celik, General Electric Company, Milwaukee, Wisconsin and Weili Lin, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina). The degree to which noise affects a measurement is generally characterized by the signal‐to‐noise ratio (SNR, as measured by the ratio
Celik, Azim, Lin, Weili
openaire +2 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
Signal to noise ratio of upgraded imaging bolometer for KSTAR
Review of Scientific Instruments, 2018 An InfraRed imaging Video Bolometer (IRVB) was installed on KSTAR in 2012 having a ∼2 μm × 7 cm × 9 cm Pt foil blackened with graphite and a 5 mm × 5 mm aperture located 7.65 cm from the foil with 16 × 12 channels and a time resolution of 10 ms. The IR camera was an Indigo Phoenix (InSb, 320 × 256 pixels, 435 fps, <25 mK).
Byron J. Peterson +6 more
openaire +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
Denoising two-photon calcium imaging data. [PDF]
PLoS ONE, 2011 Two-photon calcium imaging is now an important tool for in vivo imaging of biological systems. By enabling neuronal population imaging with subcellular resolution, this modality offers an approach for gaining a fundamental understanding of brain anatomy ...
Wasim Q Malik +3 more
doaj +1 more source
On the efficiency of computational imaging with structured illumination
, 2018 A generic computational imaging setup is considered which assumes sequential illumination of a semi-transparent object by an arbitrary set of structured illumination patterns.
Gureyev, T. E. +4 more
core +1 more source
Acousto-optical coherence tomography with a digital holographic detection scheme [PDF]
, 2012 Acousto-optical coherence tomography (AOCT) consists in using random phase jumps on ultrasound and light to achieve a millimeter resolution when imaging thick scattering media. We combined this technique with heterodyne off-axis digital holography.
Benoit, Emilie +4 more
core +5 more sources