Results 61 to 70 of about 137,016 (337)
Population Ecology, EarlyView.We investigate the seasonal dynamics of two freshwater snails, Biomphalaria straminea and Melanoides tuberculata, in artificial reservoirs of the Brazilian semiarid region. Despite regulated hydrology, B. straminea exhibited strong seasonal fluctuations associated with dry periods, while M. tuberculata maintained stable populations throughout the year,
Lucas Henrique Sousa da Silva +6 more
wiley +1 more source
Preliminary Design and Evaluation of a B-Scan OCT-Guided Needle
Photonics, 2014 Real-time intraoperative B-scan optical coherence tomography (OCT) visualization of intraocular tissues is a desired ophthalmic feature during retinal procedures.
Karen M. Joos, Jin-Hui Shen
doaj +1 more source
Low-cost three-dimensional printed phantom for neuraxial anesthesia training: Development and comparison to a commercial model. [PDF]
PLoS ONE, 2018 METHODS:Anonymized CT DICOM data was segmented to create a 3D model of the lumbar spine. The 3D model was modified, placed inside a digitally designed housing unit and fabricated on a desktop 3D printer using polylactic acid (PLA) filament. The model was
Azad Mashari +7 more
doaj +1 more source
Iterative CT reconstruction using shearlet-based regularization [PDF]
, 2012 In computerized tomography, it is important to reduce the image noise without increasing the acquisition dose. Extensive research has been done into total variation minimization for image denoising and sparse-view reconstruction. However, TV minimization
Goossens, Bart +6 more
core +1 more source
Making tau amyloid models in vitro: a crucial and underestimated challenge
FEBS Letters, EarlyView.This review highlights the challenges of producing in vitro amyloid assemblies of the tau protein. We review how accurately the existing protocols mimic tau deposits found in the brain of patients affected with tauopathies. We discuss the important properties that should be considered when forming amyloids and the benchmarks that should be used to ...
Julien Broc, Clara Piersson, Yann Fichou
wiley +1 more source
Applied Sciences, 2018 Electroencephalography (EEG) signals greatly suffer from gradient artefacts (GAs) due to the time-varying field gradients in the magnetic resonance (MR) scanner during the simultaneous acquisition of EEG and functional magnetic resonance imaging (fMRI ...
Muhammad E. H. Chowdhury +3 more
doaj +1 more source
Dynamic Hepatocellular Carcinoma Model Within a Liver Phantom for Multimodality Imaging
European Journal of Radiology Open, 2020 Introduction: Hepatocellular carcinoma (HCC) is one of the most common cancer in the world, and the effectiveness of its treatment lies in its detection in its early stages.
Muntaser S. Ahmad +6 more
doaj +1 more source
Journal of Imaging, 2022 Tissue phantoms are important for medical research to reduce the use of animal or human tissue when testing or troubleshooting new devices or technology.
Sofia I. Hernandez-Torres +2 more
doaj +1 more source
Fast Monte Carlo Simulation for Patient-specific CT/CBCT Imaging Dose Calculation
, 2011 Recently, X-ray imaging dose from computed tomography (CT) or cone beam CT (CBCT) scans has become a serious concern. Patient-specific imaging dose calculation has been proposed for the purpose of dose management.
Briesmeister J F +23 more
core +1 more source
Acoustic images of gel dosimetry phantoms
Physics Procedia, 2010 AbstractThis work presents Vibro-acoustography (VA) as a tool to visualize absorbed dose in a polymer gel dosimetry phantom. VA relies on the mechanical excitation introduced by the acoustic radiation force of focused modulated ultrasound in a small region of the object. A hydrophone or microphone is used to measure the sound emitted from the object in
Randall R. Kinnick +4 more
openaire +2 more sources