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EnglishIn this work we present a detection system, based on a CdTe detector and an innovative digital pulse processing (DPP) system, for high-rate X-ray spectroscopy in mammography (1–30 keV). The DPP system performs a height and shape analysis of the detector pulses, sampled and digitized by a 14-bit, 100 MHz ADC. We show the results of the characterization of the detection system both at low and high photon counting rates by using monoenergetic X-ray sources and a nonclinical X-ray tube. The detection system exhibits excellent performance up to 830 kcps with an energy resolution of 4.5% FWHM at 22.1 keV. Direct measurements of clinical molybdenum X-ray spectra were carried out by using a pinhole collimator and a custom alignment device. A comparison with the attenuation curves and the half value layer values, obtained from the measured and simulated spectra, from an ionization chamber and from a solid state dosimeter, also shows the accuracy of the measurements. These results make the proposed detection system a very attractive tool for both laboratory research, calibration of dosimeters and advanced quality controls in mammography.
Abbene, L., Gerardi, G., Principato, F., Del Sordo, S., & Raso, G. (2012). Direct Measurement of Mammographic X-Ray Spectra with a Digital CdTe Detection System. SENSORS, 12(6), 8390-8404.
| Data di pubblicazione: | 2012 |
| Titolo: | Direct Measurement of Mammographic X-Ray Spectra with a Digital CdTe Detection System |
| Autori: | |
| Citazione: | Abbene, L., Gerardi, G., Principato, F., Del Sordo, S., & Raso, G. (2012). Direct Measurement of Mammographic X-Ray Spectra with a Digital CdTe Detection System. SENSORS, 12(6), 8390-8404. |
| Rivista: | |
| Settore Scientifico Disciplinare: | Settore FIS/01 - Fisica Sperimentale Settore FIS/07 - Fisica Applicata(Beni Culturali, Ambientali, Biol.e Medicin) |
| Appare nelle tipologie: | 1.01 Articolo in rivista |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| L. Abbene et al_Sensors_2012.pdf | Articolo | N/A | Open Access Visualizza/Apri |
http://hdl.handle.net/10447/63362
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