Results 121 to 130 of about 511,439 (299)

Characterizing analogue caldera collapse with computerized X-ray tomography [PDF]

, 2013
Analogue models of caldera collapse were imaged by computerized X-ray tomography (μCT). Interval μCT radiography sequences document ‘2.5D’ surface and internal model deformation in an unprecedented way, and carry the potential for a better understanding ...
Boone, Matthieu, Cnudde, Veerle, Kervyn de Meerendre, Matthieu, Pauwels, Elin, Poppe, Sam   +4 more
core   +1 more source

A Python package for fast GPU‐based proton pencil beam dose calculation

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose Open‐source GPU‐based Monte Carlo (MC) proton dose calculation algorithms provide high speed and unparalleled accuracy but can be complex to integrate with new applications and remain slower than GPU‐based pencil beam (PB) methods, which sacrifice some physical accuracy for sub‐second plan calculation.
Mahasweta Bhattacharya, Calin Reamy, Heng Li, Junghoon Lee, William T. Hrinivich   +4 more
wiley   +1 more source

Applications of Indirect Imaging techniques in X-ray binaries [PDF]

arXiv, 2000
A review is given on aspects of indirect imaging techniques in X-ray binaries which are used as diagnostics tools for probing the X-ray dominated accretion disc physics. These techniques utilize observed properties such as the emission line profile variability, the time delays between simultaneous optical/X-ray light curves curves, the light curves of ...
arxiv  

Risk analysis of the Unity 1.5T MR‐Linac adapt‐to‐shape workflow

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Background and Purpose The adapt‐to‐shape (ATS) workflow on the Unity MR‐Linac (Elekta AB, Stockholm, Sweden) allows for full replanning including recontouring and reoptimization5. Additional complexity to this workflow is added when the adaptation involves the use of MIM Maestro (MIM Software, Cleveland, OH) software in conjunction with ...
Jiayi Liang, Eric Aliotta, Neelam Tyagi, Paola Godoy Scripes, Nicolas Côté, Ergys Subashi, Qijie Huang, Lian Sun, Ching‐Yun Chan, Angela Ng, Theresa Wunner, Victoria Brennan, Kaveh Zakeri, James Mechalakos   +13 more
wiley   +1 more source

Development of Focused X-ray Luminescence Compute Tomography Imaging [PDF]

arXiv
X-ray luminescence is produced when contrast agents absorb energy from X-ray photons and release a portion of that energy by emitting photons in the visible and near-infrared range. X-ray luminescence computed tomography (XLCT) was introduced in the past decade as a hybrid molecular imaging modality combining the merits of both X-ray imaging (high ...
arxiv  

Pulmonary arterial remodeling revealed by microfocal x-ray tomography [PDF]

, 2001
Animal models and micro-CT imaging are useful for understanding the functional consequences of, and identifying the genes involved in, the remodeling of vascular structures that accompanies pulmonary vascular disease.
Dawson, Christopher A, Dhyani, Anita H., Haworth, Steven Thomas, Karau, Kelly L., Molthen, Robert C.   +4 more
core   +1 more source

Doppler tomography of the transient X-ray binary Centaurus X-4 in quiescence

, 2005
We present ESO-NTT low resolution spectroscopy of the neutron star X-ray transient Cen X-4 in quiescence over a complete orbital cycle. Our data reveal the presence of a K3-7 V companion which contributes 63% to the 5600-6900A flux and orbits the neutron
Belian, Bhattacharya, Brown, Burderi, Campana, Campana, Campana, Campana, Campana, Casares, Casares, Chevalier, Cowley, Eracleous, G. L. Israel, Harlaftis, Harlaftis, Haswell, Horne, Horne, Hynes, Illarionov, J. Casares, L. Stella, Maccarone, Markwardt, Markwardt, Marsh, Martin, McClintock, McClintock, Menou, P. A. Charles, P. D'Avanzo, Rutledge, S. Campana, S. Covino, Shaham, Shahbaz, Shahbaz, Shahbaz, Steeghs, Stella, Swank, Torres, van der Klis, van Paradijs, Welsh, Wijnands, Wynn   +49 more
core   +1 more source

Improving dose delivery in non‐coplanar cranial SRS: Stereoscopic x‐ray‐guided mitigation of table walkout errors

Journal of Applied Clinical Medical Physics, EarlyView.
Purpose Linear accelerator (LINAC)‐based single‐isocenter multi‐target (SIMT) treatment has streamlined the cranial stereotactic radiosurgery (SRS) workflow. Though efficient, SIMT delivery adds additional challenges that should be considered, including increased sensitivity to rotational errors for off‐isocenter targets.
Yohan A. Walter, Philip F. Durham, Anne N. Hubbard, William E. Burrell, Hsinshun T. Wu   +4 more
wiley   +1 more source

X-ray Micro-CT based characterization of rock cuttings with deep learning

Applied Computing and Geosciences
Rock cuttings from destructive boreholes are a common and cheaper source of drilling materials that can be used to determine underground geology compared to rock core samples.
Nils Olsen, Yifeng Chen, Pascal Turberg, Alexandre Moreau, Alexandre Alahi   +4 more
doaj  

Optimization of scanner parameters for dual energy micro-CT [PDF]

, 2015
Two materials of different composition can have very similar grey values in an X-ray Computed Tomography (CT). This is because X-ray CT uses polychromatic sources in combination with energy-integrating detectors and the materials have a mass attenuation ...
De Muynck, Amélie, Dhaene, Jelle, Dierick, Manuel, Pauwels, Elin, Van Hoorebeke, Luc   +4 more
core