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Dual energy mammography: evaluation of scintillators for X-ray detectors using a signal to noise ratio model

Adrianos Toutountzis, Nikolaos Stathonikos, George Fountos, George Νικηφορίδης, Ioannis Kandarakis

Abstract


The purpose of this study was to perform an analysis on microcalcification visualization in dual energy subtraction mammography. A theoretical model was applied in order to evaluate the signal to noise ratio on subtracted mammographic images. The detector performance is investigated and compared for two different scintillators; the commercially used GdOS:Tb, and LSO:Ce. In addition, the estimation of signal and noise levels is performed for different tissue compositions and various x ray spectra. The image parameters were selected for the optimization of a dual energy subtraction technique for the improved detection and visualization of microcalcifications. The results are presented and the dependence on image parameters is discussed

Keywords


dual energy, mammography, noise, SNR, GdOS, LSO

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DOI: 10.26265/e-jst.v4i1.596

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