نتایج جستجو برای: scatter

تعداد نتایج: 12375  

Journal: :Journal of Medical Imaging 2016

Journal: :The Journal of the Acoustical Society of America 1970

2006
Mark Froggatt Dawn Gifford Steven Kreger Matthew Wolfe Brian Soller

A Rayleigh scatter-based distributed measurement technique is presented in which strain and temperature discrimination is achieved using standard polarization maintaining fiber as the sensor. High-sensitivity Optical Frequency Domain Reflectometry is used to measure the scatter.

2006
Jean RINKEL

Cone Beam Computerized Tomography (CBCT) enables threedimensional imaging with isotropic resolution. X-ray scatter management is a challenging task for quantitative CBCT imaging : scattered radiation level is significantly high on cone beam systems compared to collimated fan beam systems. The effects of this scattered radiation are cupping artifacts, streaks, and quantification inaccuracies. At...

2015
Hiroaki Shimamoto Iori Sumida Naoya Kakimoto Keisuke Marutani Ryoko Okahata Ai Usami Tomomi Tsujimoto Shumei Murakami Souhei Furukawa Sotirios Tetradis

The presence of dental metals creates radiation dose perturbation due to scattered radiation during radiation therapy for the head and neck region. The purpose of our study was to compare the scatter doses resulting from various dental metals in the direction of the buccal mucosa among a single-field technique, three-dimensional conformal radiation therapy (3D CRT), and intensity-modulated radi...

Journal: :Journal of X-ray science and technology 2011
Michael S Gossman Kunal J Paralikar Adam O Hebb Jeffrey D Wilkinson Alison R Graves-Calhoun Raymond C Lawson Jeffrey P Lopez James S Powell

OBJECT Where no society-based or manufacturer guidance on radiation limits to neuromodulation devices is available, this research provides the groundwork for neurosurgeons and radiation oncologists who rely on the computerized treatment plan clinically for cancer patients. The focus of the article is to characterize radiation parameters of attenuation and scatter when an incident therapeutic x-...

1973

This report describes the analysis of results of a Lincoln Laboratory experiment which consisted of a series of bistatic scatter and radar measurements of the scattering cross section per unit volume of rain and thin turbulent layers. Results of tbe experiment are presented as average and rms values of the ~ of the bistatic scatter cross section as calculated using the radar data to the cross s...

Journal: :The Astrophysical Journal 2023

One of the most mysterious astrophysical states is common envelope (CE) phase binary evolution, in which two stars are enshrouded by shed one them. Interactions between and shrinks orbit. The CE can lead to mergers or a subsequent interactions. Mergers may involve any combination compact objects and/or stars. Some involving white dwarfs, produce Type Ia supernovae, while merging neutron yield g...

Journal: :Journal of Multivariate Analysis 2007

Journal: :Mathematical and Computer Modelling 2005

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