Title :
A high efficiency single photon counting silicon matrix for position sensitive X-ray detection
Author :
Arfelli, F. ; Bonvicini, V. ; Bravin, A. ; Cantatore, G. ; Castelli, E. ; Palma, L. Dalla ; Di Michiel, M. ; Longo, R. ; Olivo, A. ; Pani, S. ; Pontoni, D. ; Poropat, P. ; Prest, M. ; Rashevsky, A. ; Tromba, G. ; Vacchi, A. ; Vallazza, E.
Author_Institution :
Ist. Nazionale di Fisica Nucl., Trieste, Italy
Abstract :
The SYRMEP collaboration (Synchrotron Radiation for Medical Physics) is developing a novel imaging device to be used with a laminar monochromatic synchrotron radiation X-ray beam for applications in digital mammography. Its main components are silicon microstrip detectors and a dedicated VLSI readout chip based on the single photon counting concept. The innovative geometry-several overlapped detectors with strips parallel to the beam direction-determines a matrix of pixels, each of them having an area of 200×300 μm2, which can detect up to 106 photons/(mm2 s) with 90% efficiency at 25 keV. Front-end and readout electronics are expandable in a modular fashion and can be coupled to successive receptor versions with increasing number of channels, while a VME based DAQ system offers full testing facilities. In our view this system is providing specific and original contributions to digital mammography but it could also be useful in other modern radiology fields
Keywords :
CMOS integrated circuits; VLSI; X-ray detection; diagnostic radiography; digital readout; photon counting; position sensitive particle detectors; silicon radiation detectors; SYRMEP collaboration; Si; Si microstrip detectors; VLSI readout chip; digital mammography; front-end electronics; pixels; position sensitive X-ray detection; readout electronics; single photon counting; Biomedical imaging; Collaboration; Electronic equipment testing; Mammography; Optical imaging; Physics; Silicon; Synchrotron radiation; Transmission line matrix methods; X-ray imaging;
Conference_Titel :
Nuclear Science Symposium, 1997. IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
0-7803-4258-5
DOI :
10.1109/NSSMIC.1997.672590
