Author/Authors :
Aiello، نويسنده , , S. and Bottigli، نويسنده , , U. and Fauci، نويسنده , , F. and Golosio، نويسنده , , B. and Lo Presti، نويسنده , , D. and Masala، نويسنده , , G.L. and Oliva، نويسنده , , P. and Raso، نويسنده , , G. and Stumbo، نويسنده , , S. and Tangaro، نويسنده , , S.، نويسنده ,
Abstract :
The proper use of imaging equipment in radiological units is based on an appropriate knowledge of the physical characteristics of the X-ray beam used. The FLUXEN PROJECT is working on a portable apparatus which, together with dedicated software, is able to perform an exact spectral reconstruction of the radiation produced in diagnostic X-ray tubes. The apparatus characterizes the energy spectrum of radiological tubes and also provides a measurement of the emitted flux. The acquisition system is based on a commercial CZT detector (3×3×2 mm3), produced by AMPTEK, cooled by a Peltier cell, with a high efficiency in the diagnostic X-ray energy range and modified in the shaping electronics so as to obtain a faster response. The acquiring section lies on a NuDAQ I/O card with a sampling frequency of up to 20 MHz. The signal produced by the X-ray tube is wholly acquired and an off-line analysis is made so as to make possible an accurate recognition of pile-up events and a reconstruction of the emitted spectra. The reconstructed spectra of a General Electric Senographe DMR mammographic X-ray tube are shown.
