<abstract xmlns="http://www.w3.org/1999/xhtml">

<italic>Introduction:</italic> Advances in digital detector technology and methods of image presentation in digital mammography now offer the possibility of implementing mathematical assessment methods to quantitative image analysis. The aim of this work was to develop new software to simplify the application of the existing international standard for DQE in digital mammography and show in detail how it can be applied, using a Siemens Mammomat Inspiration as a model.
<italic>Material and methods:</italic> Consistent with the IEC standard a 2 mm Al filter at the tube exit and images in DICOM format as raw data, without applying any additional post-processing were used. Measurements were performed for W/Rh anode/filter combination and different tube voltage values (26 ÷ 34 kV) without any anti-scatter grid. To verify new software doses ranging from 20-600 µGy were used in measurements. Exposure (air kerma) was measured using a calibrated radiation meter (Piranha Black 457, RTI Electronics AB, Sweden). MTF was determined, using an edge test device constructed specifically for this work.
<italic>Results:</italic> It has been demonstrated that with the new software the DQE can be measured with the accuracy required by the international standard IEC 62220-1-2. DQE has been presented as a function of spatial frequency for W/Rh anode/filter combination and different tube voltage.
<italic>Conclusions:</italic> New software was used successfully to analyze image quality parameters for the Siemens Mammomat Inspiration detector. This was done on the basis of an internationally accepted methodology. In the next step, mammographs with different detector types can be compared.
</abstract>

Introduction: Advances in digital detector technology and methods of image presentation in digital mammography now offer the possibility of implementing mathematical assessment methods to quantitative image analysis. The aim of this work was to develop new software to simplify the application of the existing international standard for DQE in digital mammography and show in detail how it can be applied, using a Siemens Mammomat Inspiration as a model.
Material and methods: Consistent with the IEC standard a 2 mm Al filter at the tube exit and images in DICOM format as raw data, without applying any additional post-processing were used. Measurements were performed for W/Rh anode/filter combination and different tube voltage values (26 ÷ 34 kV) without any anti-scatter grid. To verify new software doses ranging from 20-600 µGy were used in measurements. Exposure (air kerma) was measured using a calibrated radiation meter (Piranha Black 457, RTI Electronics AB, Sweden). MTF was determined, using an edge test device constructed specifically for this work.
Results: It has been demonstrated that with the new software the DQE can be measured with the accuracy required by the international standard IEC 62220-1-2. DQE has been presented as a function of spatial frequency for W/Rh anode/filter combination and different tube voltage.
Conclusions: New software was used successfully to analyze image quality parameters for the Siemens Mammomat Inspiration detector. This was done on the basis of an internationally accepted methodology. In the next step, mammographs with different detector types can be compared.

Determination of DQE as a quantitative assessment of detectors in digital mammography: Measurements and calculation in practice

Polish Journal of Medical Physics and Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Introduction: Advances in digital detector technology and methods of image presentation in digital mammography now offer the possibility of implementing...

Determination of DQE as a quantitative assessment of detectors in digital mammography: Measurements and calculation in practice

Online veröffentlicht: 27. Sept. 2021

Seitenbereich: 223 - 232

DOI: https://doi.org/10.2478/pjmpe-2021-0027

Schlüsselwörter
digital mammography, modulation transfer function, noise power spectra, detective quantum efficiency, X-ray

© 2021 Anna Wysocka-Rabin et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Determination of DQE as a quantitative assessment of detectors in digital mammography: Measurements and calculation in practice

Online veröffentlicht: 27. Sept. 2021

Seitenbereich: 223 - 232

DOI: https://doi.org/10.2478/pjmpe-2021-0027

Schlüsselwörterdigital mammography, modulation transfer function, noise power spectra, detective quantum efficiency, X-ray

© 2021 Anna Wysocka-Rabin et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Schlüsselwörter
digital mammography, modulation transfer function, noise power spectra, detective quantum efficiency, X-ray