A Generalized Detective Quantum Efficiency (DQE) Approach To The Analysis Of X-Ray Imaging

Markku J Tapiovaara; Robert F Wagner

doi:10.1117/12.939313

15 June 1984 A Generalized Detective Quantum Efficiency (DQE) Approach To The Analysis Of X-Ray Imaging

Markku J Tapiovaara, Robert F Wagner

Proceedings Volume 0454, Application of Optical Instrumentation in Medicine XII; (1984) https://doi.org/10.1117/12.939313
Event: Application of Optical Instrumentation in Medicine XII, 1984, San Diego, United States

Abstract

X-ray imaging utilizing broad x-ray spectra has been studied. The analysis suggests a generalized view of the concept of DQE in a way that makes the efficiency dependent on the imaging task. The conventially defined DQE is shown to be equivalent to the more general DQE task when the task is differentiatinebetween radiation levels without any differences between signal and background spectra. A formulation of the theory and some examples concerning intensifying screens are presented. For some screens the difference between imaging task dependent DQEtask and the conventional DQEN may be appreciable, larger than 30%, when imaging targets with strong energy dependence in their contrast, such as bone or iodine.

Citation Download Citation

Markku J Tapiovaara and Robert F Wagner "A Generalized Detective Quantum Efficiency (DQE) Approach To The Analysis Of X-Ray Imaging", Proc. SPIE 0454, Application of Optical Instrumentation in Medicine XII, (15 June 1984); https://doi.org/10.1117/12.939313

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