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Semiempirical simulation of x-ray detectors for imaging applications
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10.1118/1.4767768
/content/aapm/journal/medphys/39/12/10.1118/1.4767768
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/39/12/10.1118/1.4767768

Figures

Image of FIG. 1.
FIG. 1.

Detector simulation scenarios. (a) Indirect detection (scintillator-detector): x-rays to light conversion and detection. (b) Direct detection (photoconductor-detector): x-rays to electrons conversion and detection. (c) Simple detector.

Image of FIG. 2.
FIG. 2.

Structure of the detector simulator described in this work.

Image of FIG. 3.
FIG. 3.

Scheme of the detector reference system. (Left) Detector reference; (Right) Final image reference with respect to the detector reference.

Image of FIG. 4.
FIG. 4.

(A) Total PFS function overlapped to the surface of the detector; (B) total PSF mask laid on the detector matrix (gray levels are reversed).

Image of FIG. 5.
FIG. 5.

(a) Experimental noise image (“DRK”). (b) Example of experimental image inhomogeneity. The shown image is one of the “I0” data set. In both images, gray levels were stretched in order to better show the effects of the amplifiers. (c) Noise map calculated from three DRK image using Eq. (17). (d) Inhomogeneity map calculated using Eq. (18).

Image of FIG. 6.
FIG. 6.

Comparison plots of the experimental and simulated MTF curves.

Image of FIG. 7.
FIG. 7.

Comparison plots of the experimental and simulated nNPS curves.

Image of FIG. 8.
FIG. 8.

Comparison plots of the experimental and simulated NEQ curves.

Tables

Generic image for table
TABLE I.

List of the characteristics of the computers used in benchmark tests.

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TABLE II.

List of characteristics of the experimental setup used to validate the simulation.

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TABLE III.

List of experimental measurements and parameters.

Generic image for table
TABLE IV.

Detector execution time on different platform (mean ± standard deviation).

Generic image for table
TABLE V.

Detector model parameters: scintillator standard deviation expressed in μm and pixel units, vADC gain and pixel efficiency.

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/content/aapm/journal/medphys/39/12/10.1118/1.4767768
2012-12-03
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Semiempirical simulation of x-ray detectors for imaging applications
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/39/12/10.1118/1.4767768
10.1118/1.4767768
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