A minimum SNR criterion for computed tomography object detection in the projection domain.
Sign Up to like & getrecommendations! Published in 2022 at "Medical physics"
DOI: 10.1002/mp.15832
Abstract: BACKGROUND A common rule of thumb for object detection is the Rose criterion, which states that a signal must be five standard deviations above background to be detectable to a human observer. The validity of… read more here.
Keywords: snr; projection; methodology; object detection ... See more keywords
Improved stimulated echo in diffusion magnetic resonance imaging: introducing a π pulse for SNR enhancement
Sign Up to like & getrecommendations! Published in 2019 at "Magnetic Resonance in Medicine"
DOI: 10.1002/mrm.27653
Abstract: Anomalous diffusion in biological tissues can be examined by diffusion MRI for various applications, including tumor diagnosis and measurement of brain fiber pathways. However, the measurement of anomalous diffusion requires high b‐values for the diffusion… read more here.
Keywords: diffusion; magnetic resonance; stimulated echo; improved stimulated ... See more keywords
Comparison of different compressed sensing algorithms for low SNR 19F MRI applications—Imaging of transplanted pancreatic islets and cells labeled with perfluorocarbons
Sign Up to like & getrecommendations! Published in 2017 at "NMR in Biomedicine"
DOI: 10.1002/nbm.3776
Abstract: Transplantation of pancreatic islets is a possible treatment option for patients suffering from Type I diabetes. In vivo imaging of transplanted islets is important for assessment of the transplantation site and islet distribution. Thanks to… read more here.
Keywords: compressed sensing; 19f mri; pancreatic islets; snr ... See more keywords
Accelerated 2D Laplace NMR of porous media with compressed sensing at low SNR
Sign Up to like & getrecommendations! Published in 2019 at "Microporous and Mesoporous Materials"
DOI: 10.1016/j.micromeso.2019.109666
Abstract: Abstract Multidimensional Laplace NMR methods can provide insights into pore structures and confined fluid information. However, these methods are time-consuming and could be accelerated. In this research, we shorten the measurement time for T2–T2, D–T2,… read more here.
Keywords: snr accelerated; laplace nmr; sensing low; snr ... See more keywords
Effects of proximity and noise level of phased array coil elements on overall signal-to-noise in parallel MR spectroscopy.
Sign Up to like & getrecommendations! Published in 2018 at "Magnetic resonance imaging"
DOI: 10.1016/j.mri.2017.12.001
Abstract: Parallel imaging using phased array coils facilitates accelerated magnetic resonance imaging (MRI) and spectroscopy (MRS). Parallel data reconstruction requires the combination of data from individual coil elements, but limited combination algorithms currently exist for higher-order… read more here.
Keywords: coil elements; phased array; coil; spectroscopy ... See more keywords
Imaging characteristics of intravascular spherical contrast agents for grating-based x-ray dark-field imaging – effects of concentrations, spherical sizes and applied voltage
Sign Up to like & getrecommendations! Published in 2020 at "Scientific Reports"
DOI: 10.1038/s41598-020-66395-x
Abstract: This study investigates the x-ray scattering characteristics of microsphere particles in x-ray-grating-based interferometric imaging at different concentrations, bubble sizes and tube voltages (kV). Attenuation (ATI), dark-field (DFI) and phase-contrast (PCI) images were acquired. Signal-to-noise (SNR)… read more here.
Keywords: contrast; grating based; dark field; size ... See more keywords
Carboxyethyltin and transition metal co-functionalized tungstoantimonates composited with polypyrrole for enhanced electrocatalytic methanol oxidation.
Sign Up to like & getrecommendations! Published in 2019 at "Dalton transactions"
DOI: 10.1039/c8dt05118f
Abstract: Carboxyethyltin and first-row transition metals (TMs) were firstly introduced into trivacant Keggin-type tungstoantimonate in an aqueous solution, leading to the formation of four crystalline organic-inorganic hybrid sandwich-type polyoxometalates (POMs), formulated as Na10-x-yKyHx[((TM)(H2O)3)2(Sn(CH2)2COO)2(SbW9O33)2]·nH2O (SbW9-TM-SnR, TM =… read more here.
Keywords: oxidation; sbw9 snr; composited polypyrrole; spectroscopy ... See more keywords
High-energy gamma-ray study of the dynamically young SNR G150.3+4.5
Sign Up to like & getrecommendations! Published in 2020 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/202038503
Abstract: The supernova remnant (SNR) G150.3+4.5 was recently discovered in the radio band; it exhibits a shell-like morphology with an angular size of $\sim 3^{\circ}$, suggesting either an old or a nearby SNR. Extended $\gamma$-ray emission… read more here.
Keywords: emission; g150; gamma ray; snr ... See more keywords
Monitoring spatial patterns and changes of surface net radiation in urban and suburban areas using satellite remote-sensing data
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Remote Sensing"
DOI: 10.1080/01431161.2016.1275875
Abstract: ABSTRACT The net radiation obtained by the earth’s surface drives the exchange and transmission of energy and material in earth systems. Accurately quantifying the surface net radiation (SNR) is a premise for climate change research.… read more here.
Keywords: net radiation; suburban areas; surface; land surface ... See more keywords
Trends in work-related mental disorders by sector in France.
Sign Up to like & getrecommendations! Published in 2018 at "Occupational medicine"
DOI: 10.1093/occmed/kqy090
Abstract: Background Notifications of work-related mental disorders (WRMDs) are increasing while little data are available on trends by industrial sector. Aims To assess WRMD notifications and trends from 2001 to 2011 by industrial sector using data… read more here.
Keywords: industrial sector; work related; mental disorders; snr ... See more keywords
A Novel Equivalent Definition of Modified Bessel Functions for Performance Analysis of Multi-Hop Wireless Communication Systems
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Access"
DOI: 10.1109/access.2017.2685085
Abstract: A statistical model is derived for the equivalent signal-to-noise ratio of the Source-to-Relay-to-Destination (S-R-D) link for Amplify-and-Forward (AF) relaying systems that are subject to block Rayleigh-fading. The probability density function and the cumulated density function… read more here.
Keywords: bessel functions; destination; modified bessel; link ... See more keywords