The Experts below are selected from a list of 327 Experts worldwide ranked by ideXlab platform
Carlo Bergamini - One of the best experts on this subject based on the ideXlab platform.
-
comparison of radiation doses to patients undergoing standard radiographic examinations with conventional screen film Radiography Computed Radiography and direct digital Radiography
British Journal of Radiology, 2006Co-Authors: G Compagnone, Casadio M Baleni, Laura Pagan, F L Calzolaio, Libero Barozzi, Carlo BergaminiAbstract:New flat-panel direct digital Radiography equipment has recently been installed in our Accident and Emergency Department; its characteristics and versatility are well suited to the work undertaken in this environment. The aim of this study was to compare radiation doses to patients undergoing standard radiographic examinations using conventional screen–film Radiography, Computed Radiography and direct digital Radiography; entrance surface dose and effective dose were calculated for six standard examinations (a total of 10 projections) using standard patient exposure parameters for the three imaging modalities. It was found that doses for Computed Radiography (all examinations) were higher than the doses for the other two modalities; effective doses for direct digital Radiography were ∼29% and ∼43% lower than those for screen–film Radiography and Computed Radiography, respectively. The image quality met the criteria in the European guidelines for all modalities.
Cesar S A Pedrosa - One of the best experts on this subject based on the ideXlab platform.
-
real time measurement and audit of radiation dose to patients undergoing Computed Radiography
Radiology, 2002Co-Authors: E Vano, Jose M Fernandez, E Guibelalde, L Gonzalez, Cesar S A PedrosaAbstract:A real-time patient dose monitoring system for auditing Computed Radiography is described. Technical data from each exposure and for every examination type are collected and sent by a network to a workstation, which calculates the moving average values of entrance skin dose and dose-area product from the 10 most recently examined patients. Comparison of averages with reference values generates warning messages if reference values are exceeded, prompting corrective action if necessary. © RSNA, 2002
Andrew Karellas - One of the best experts on this subject based on the ideXlab platform.
-
Modeling the Performance Characteristics of Computed Radiography (CR) Systems
IEEE Transactions on Medical Imaging, 2010Co-Authors: Srinivasan Vedantham, Andrew KarellasAbstract:Computed Radiography (CR) using storage phosphors is widely used in digital Radiography and mammography. A cascaded linear systems approach wherein several parameter values were estimated using Monte Carlo methods was used to model the image formation process of a single-side read "flying spot" CR system using a granular phosphor. Objective image quality metrics such as modulation transfer function and detective quantum efficiency were determined using this model and show good agreement with published empirical data. A model such as that addressed in this work could allow for improved understanding of the effect of storage phosphor physical properties and CR reader parameters on objective image quality metrics for existing and evolving CR systems.
G Compagnone - One of the best experts on this subject based on the ideXlab platform.
-
comparison of radiation doses to patients undergoing standard radiographic examinations with conventional screen film Radiography Computed Radiography and direct digital Radiography
British Journal of Radiology, 2006Co-Authors: G Compagnone, Casadio M Baleni, Laura Pagan, F L Calzolaio, Libero Barozzi, Carlo BergaminiAbstract:New flat-panel direct digital Radiography equipment has recently been installed in our Accident and Emergency Department; its characteristics and versatility are well suited to the work undertaken in this environment. The aim of this study was to compare radiation doses to patients undergoing standard radiographic examinations using conventional screen–film Radiography, Computed Radiography and direct digital Radiography; entrance surface dose and effective dose were calculated for six standard examinations (a total of 10 projections) using standard patient exposure parameters for the three imaging modalities. It was found that doses for Computed Radiography (all examinations) were higher than the doses for the other two modalities; effective doses for direct digital Radiography were ∼29% and ∼43% lower than those for screen–film Radiography and Computed Radiography, respectively. The image quality met the criteria in the European guidelines for all modalities.
E Vano - One of the best experts on this subject based on the ideXlab platform.
-
real time measurement and audit of radiation dose to patients undergoing Computed Radiography
Radiology, 2002Co-Authors: E Vano, Jose M Fernandez, E Guibelalde, L Gonzalez, Cesar S A PedrosaAbstract:A real-time patient dose monitoring system for auditing Computed Radiography is described. Technical data from each exposure and for every examination type are collected and sent by a network to a workstation, which calculates the moving average values of entrance skin dose and dose-area product from the 10 most recently examined patients. Comparison of averages with reference values generates warning messages if reference values are exceeded, prompting corrective action if necessary. © RSNA, 2002