TY - JOUR
T1 - Modeling the performance characteristics of computed radiography (CR) systems
AU - Vedantham, Srinivasan
AU - Karellas, Andrew
N1 - Funding Information:
Manuscript received August 24, 2009; revised November 02, 2009; accepted November 04, 2009. Current version published March 03, 2010. This work was supported in part by National Institutes of Health (NIH) and National Institute of Biomedical Imaging and Bioengineering (NIBIB) under Grant R01EB004015. This work was presented in part at the 49th Annual Meeting of the American Association of Physicists in Medicine (AAPM), Minneapolis, MN. The contents of this paper are the sole responsibility of the authors and do not represent the official views of the NIH or NIBIB. Asterisk indicates corresponding author. *S. Vedantham is with the Department of Radiology, University of Massachusetts Medical School, Worcester, MA 01655 USA. (e-mail: [email protected]).
PY - 2010/3
Y1 - 2010/3
N2 - 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.
AB - 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.
KW - Cascaded linear systems
KW - Computed radiography (CR)
KW - Modeling
KW - Monte Carlo methods
KW - Radiography
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U2 - 10.1109/TMI.2009.2036995
DO - 10.1109/TMI.2009.2036995
M3 - Article
C2 - 20199915
AN - SCOPUS:77749264168
SN - 0278-0062
VL - 29
SP - 790
EP - 806
JO - IEEE Transactions on Medical Imaging
JF - IEEE Transactions on Medical Imaging
IS - 3
M1 - 5423312
ER -