STUDY OF ANTI-SCATTER GRIDS : RADIOGRAPHY WITH HIGH RATIO GRID
نویسندگان
چکیده
منابع مشابه
Anti-scatter Grids, Applied in Diagnostic Radiology
A new edition of the international standard IEC 60627 of anti-scatter grids will be published within some months. The presentation deals with the most important characteristics of anti-scatter grids according to the standard. Introduction During imaging in diagnostic radiology, X-ray beam is scattered on all media between X-ray source and X-ray image receptor. The most important one from these ...
متن کاملGrid-like contrast enhancement for bedside chest radiographs acquired without anti-scatter grid
Bernd Menser, PhD, X-Ray Scientist Bedside chest radiographs can be acquired with or without an anti-scatter grid. Using a grid may improve image contrast, although it is frequently avoided in clinical practice, due to dose considerations, beam alignment difficulties, and a more complicated workflow[2]. Also, structures appearing from the (usually stationary) grid may interfere with diagnostic ...
متن کاملGrid of the Grids
This document describes issues related to running a heterogeneous, but production-level Grid. It is based on experience gained running and maintaining heterogeneous GridLab testbed as well as large ad hoc demonstration testbeds. The Grids discussed in this document are built not using dedicated machines or clusters, but their building blocks are other Grids or their parts. Last amendment date: ...
متن کاملAdaptive High-Aspect Ratio Structured 2-D Grids
The problem of adaptation of structured 2-D grids to a control function is investigated. We aim to create a grid with highly stretched and nearly orthogonal cells in regions of control function’s singularities of thin-layer type. Adaptation is performed by optimizing a mesh quality functional via node-movement. Construction of the functional is specifically investigated. The presented functiona...
متن کاملComparison of anti-scatter grids for digital imaging with use of a direct-conversion flat-panel detector.
Our purpose in this study was to establish a selection standard for anti-scatter grids for a direct conversion flat-panel detector (FPD) system. As indices for grid evaluation, we calculated the selectivity, Bucky factor, and the signal-to-noise ratio improvement factor (SIF) by measuring rates of scatter transmission, primary transmission, and total transmission (based on the digitally display...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Japanese Journal of Radiological Technology
سال: 1988
ISSN: 0369-4305,1881-4883
DOI: 10.6009/jjrt.kj00001360432