29 March 2016 Analysis of the scatter effect on detective quantum efficiency of digital mammography
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Abstract
The scatter effect on detective quantum efficiency (DQE) of digital mammography is investigated using the cascaded-systems model. The cascaded-systems model includes a scatter-reduction device as a binomial selection stage. Quantum-noise-limited operation approximates the system DQE into the multiplication form of the scatter-reduction device DQE and the conventional detector DQE. The developed DQE model is validated in comparisons with the measured results using a CMOS flat-panel detector under scatter environments. For various scatter-reduction devices, the slot-scan method shows the best scatter-cleanup performance in terms of DQE, and the scatter-cleanup performance of the conventional one-dimensional grid is rather worse than the air gap. The developed model can also be applied to general radiography and will be very useful for a better design of imaging chain.
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Jiwoong Park, Seungman Yun, Dong Woon Kim, Cheol-Ha Baek, Hanbean Youn, Hosang Jeon, Ho Kyung Kim, "Analysis of the scatter effect on detective quantum efficiency of digital mammography", Proc. SPIE 9783, Medical Imaging 2016: Physics of Medical Imaging, 97832M (29 March 2016); doi: 10.1117/12.2216778; https://doi.org/10.1117/12.2216778
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