Results 11 to 20 of about 902,502 (236)
Validation of OSEM algorithm for attenuation correction in cardiac SPECT studies [PDF]
, 2005 Photon attenuation is believed to be one of the major causes of artefacts in cardiac SPECT studies and therefore should be corrected to improve the specificity of cardiac SPECT imaging for the detection of coronary artery disease.
Alenezi, Ahmed M
core +6 more sources
Low attenuation microwave waveguides [PDF]
, 1974 PhDAn investigation of the dispersion and attenuation characteristics of cylindrical structures supporting guided electromagnetic waves with low attenuation is described.
Al-Hariri, Ali Mohammed Bakir
core +4 more sources
Atmosphere, 2023 X-band dual-polarization phased array radar (XPAR-D) possesses high resolution and plays a significant role in detecting meso- and micro-scale convective systems.
Jiabao Feng +4 more
doaj +1 more source
X-Band Radar Attenuation Correction Method Based on LightGBM Algorithm
Remote Sensing, 2023 X-band weather radar can provide high spatial and temporal resolution data, which is essential to precipitation observation and prediction of mesoscale and microscale weather.
Qiang Yang +5 more
doaj +1 more source
Atmosphere, 2020 The values of ratio a of the linear relationship between specific attenuation and specific differential phase vary significantly in convective storms as a result of resonance scattering.
Chao Wang +4 more
doaj +1 more source
Remote Sensing, 2023 For triple-frequency radar, the attenuation attributed to atmospheric gases and stratiform clouds is diverse due to different snowfall microphysical properties, particularly in regions far from the radar.
Yue Chang +6 more
doaj +1 more source
An artefact of PET attenuation correction caused by iron overload of the liver in clinical PET-MRI
European Journal of Hybrid Imaging, 2017 Background Attenuation correction is one of the most important steps in producing quantitative PET image data. In hybrid PET-MRI systems, this correction is far from trivial, as MRI data are not correlated to PET attenuation properties of the scanned ...
Florian Büther +4 more
doaj +1 more source
Diagnostics, 2023 (1) Background: The CT-based attenuation correction of SPECT images is essential for obtaining accurate quantitative images in cardiovascular imaging.
Mariana Andrea Prieto Canalejo +5 more
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Regional Attenuation Correction of Weather Radar Using a Distributed Microwave-Links Network
Advances in Meteorology, 2017 The complex temporal-spatial variation of raindrop size distribution will affect the precision of precipitation quantitative estimates (QPE) produced from radar data, making it difficult to correct echo attenuation.
Yang Xue +4 more
doaj +1 more source
Magnetic Resonace–Based Attenuation Correction for Micro–Single-Photon Emission Computed Tomography
Molecular Imaging, 2012 Attenuation correction is necessary for quantification in micro–single-photon emission computed tomography (micro-SPECT). In general, this is done based on micro–computed tomographic (micro-CT) images.
Vincent Keereman +4 more
doaj +1 more source