Results 61 to 70 of about 226,375 (294)
Applied Sciences, 2019 In order to better detect information about a mass in breast tissue, an ultrasound tomography algorithm based on adaptive time gain compensation (TGC) was designed.
Chang Liu +5 more
doaj +1 more source
PET attenuation coefficients from CT images: experimental evaluation of the transformation of CT into PET 511-keV attenuation coefficients [PDF]
, 2018 The CT data acquired in combined PET/CT studies provide a fast and essentially noiseless source for the correction of photon attenuation in PET emission data. To this end, the CT values relating to attenuation of photons in the range of 40-140keV must be
Buck, A. +5 more
core
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective To investigate the value of constructing models based on habitat radiomics and pathomics for predicting the risk of progression in high‐grade gliomas. Methods This study conducted a retrospective analysis of preoperative magnetic resonance (MR) images and pathological sections from 72 patients diagnosed with high‐grade gliomas (52 ...
Yuchen Zhu +14 more
wiley +1 more source
Brazilian Journal of Radiation Sciences, 2019 Polymeric materials can serve as a matrix for the dispersion of nanomaterials with good attenuation features, resulting in lightweight, conformable, flexible, lead-free and easy-to-process materials.
LILIANE Aparecida SILVA +4 more
doaj +1 more source
Training Future Engineers to Be Ghostbusters: Hunting for the Spectral Environmental Radioactivity [PDF]
, 2019 Although environmental radioactivity is all around us, the collective public imagination often associates a negative feeling to this natural phenomenon.
Albéri, Matteo +8 more
core +2 more sources
A method to determine the gamma-ray linear attenuation coefficient
Annals of Nuclear Energy, 2011 Abstract In this work, gamma-ray linear attenuation coefficients of the materials such as Pb, Fe, Cu and Al were determined by means of traditional energy method and the developed timing detection technique. 1.33 MeV-energy radiation emitted from 60 Co radioisotope was used in the experiments.
openaire +2 more sources
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objectives WHO grade 4 astrocytomas are associated with poor prognosis, and their prognostic factors remain controversial. This study aimed to identify the prognostic factors and develop a management algorithm for these patients. Methods This study retrospectively included 151 CNS5 adult grade 4 astrocytomas from two medical centers.
Jiawei Cai +13 more
wiley +1 more source
Particle size and concentration effects on low energy X-ray attenuation in nanostructure and microstructure materials [PDF]
Nuclear Technology and Radiation Protection, 2018 The effects of microsize and nanosize particles in composite structures as well as the incident radiation energy on X-ray attenuation is the focus of this study.
Sarshough Samira +2 more
doaj +1 more source
Near-bottom seismic profiling: High lateral variability, anomalous amplitudes, and estimates of attenuation [PDF]
, 1980 For almost a decade the Marine Physical Laboratory of Scripps Institution of Oceanography has been conducting near‐bottom geophysical surveys involving quantitative seismic profiling.
Mayer, Larry A. +2 more
core +2 more sources
Meningovascular Inflammation in Cerebral Amyloid Angiopathy‐Related Cortical Superficial Siderosis
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT The role of inflammation in cortical superficial siderosis (cSS), a marker of cerebral amyloid angiopathy (CAA) linked to high hemorrhage risk, is unclear. We examined 15 patients with cSS using 3 T post‐contrast vessel wall MRI (VWI) and CSF analysis.
Philipp Arndt +8 more
wiley +1 more source