Investigation of CdTe, GaAs, Se and Si as Sensor Materials for Mammography
Open Access
- 1 December 2020
- journal article
- research article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Medical Imaging
- Vol. 39 (12), 3766-3778
- https://doi.org/10.1109/TMI.2020.3004648
Abstract
Despite the benefits of mammography investigations, some studies have shown that X-ray exposure from the mammography screening itself can statistically cause breast cancer in a small fraction of women. Therefore, a dose reduction in mammography is desirable. At the same time, there is a demand for a higher spatial resolution in mammographic imaging. The most promising way to achieve these goals is the use of advanced photon-processing semiconductor X-ray detectors with optimum sensor materials. This study addresses the investigation of the optimum semiconductor sensor material for mammography in combination with the photon-processing detector Medipix3RX. The influence of K-shell fluorescence from the sensor material on the achievable contrast-to-noise ratio is investigated, as well as the attenuation efficiency. The three different sensor materials, CdTe, GaAs, and Si are studied, showing advances of CdTe-sensors for mammography. Furthermore, a comparison of the contrast-to-noise ratio between a clinical Se-detector and Medipix3RX detectors with Si- and CdTe-sensors is shown using a self-produced mammography phantom that is based on real human tissue.Keywords
Funding Information
- German Ministry of Research and Education (BMBF) through the MAMMOSECUR Förderkennzeichen Project (01DN19002)
- Colombian Ministry of Science, Technology and Innovation (COLCIENCIAS) Project (80740-055-2019)
- Faculty of Science, Universidad de Los Andes (P18.160322.001-15FISI01)
This publication has 61 references indexed in Scilit:
- High-resolution 3D micro-CT imaging of breast microcalcifications: a preliminary analysisBMC Cancer, 2014
- The Medipix3RX: a high resolution, zero dead-time pixel detector readout chip allowing spectroscopic imagingJournal of Instrumentation, 2013
- Clinical dose performance of full field digital mammography in a breast screening programmeThe British Journal of Radiology, 2011
- FITPix — fast interface for Timepix pixel detectorsJournal of Instrumentation, 2011
- Theoretical analysis of the effect of charge-sharing on the Detective Quantum Efficiency of single-photon counting segmented silicon detectorsJournal of Instrumentation, 2010
- X-ray spectrum optimization of full-field digital mammography: Simulation and phantom studyMedical Physics, 2006
- Microcalcification detectability for four mammographic detectors: Flat-panel, CCD, CR, and screen/filmMedical Physics, 2002
- Direct-conversion flat-panel X-ray image sensors for digital radiographyProceedings of the IEEE, 2002
- Recent progress in CdTe and CdZnTe detectorsIEEE Transactions on Nuclear Science, 2001
- Low contrast imaging with a GaAs pixel digital detectorIEEE Transactions on Nuclear Science, 2000