Speaker
Mr
Asimakis Asimidis
(University of Ioannina)
Description
A portable PC-based X-ray imaging system has been developed based on
a 2D silicon microstrip detector and particle physics readout
electronics. The sensor is housed in a specially built hybrid, which
also hosts the front-end electronics. This hybrid is attached to the
PC with a flat cable which makes it a flexible probe. The hybrid,
including the sensor was developed earlier in the framework of the
EU FP4-Biomed-BRSMS project. The control and the readout electronics
used are based on the standard PCI and PMC architectures and were
originally developed for High Energy Physics Experiments. The use of
PCI based electronics and the development of the control software
for the PC-Linux platform led to a compact, portable, low cost
imaging system. The system was initially tested and evaluated with
beta particles from a 90Sr radioactive source, gamma rays from a
241Am radioactive source and cosmic rays, and it displayed
consistent response. It was then operated using a compact X-ray
machine with Mo tube and images of various targets were
reconstructed offline using the ROOT data analysis package. Typical
exposure times, to achieve image quality comparable to film imaging,
were long. Shorter exposure times required for medical applications
could be accomplished with the use of faster front-end chips.
Primary author
Mr
Asimakis Asimidis
(University of Ioannina)
