Title :
Digital imaging in radiology: preliminary results obtained with a high spatial resolution 2D silicon detector
Author :
Alfano, B. ; Bandettini, A. ; Bencivelli, W. ; Bertolucci, E. ; Bottigli, U. ; Conti, M. ; Del Guerra, A. ; Fantacci, M.E. ; Gambaccini, M. ; Larobina, M. ; Marziani, M. ; Randaccio, P. ; Rosso, V. ; Russo, P. ; Stefanini, A.
Author_Institution :
Istituto per lo Studio dei Tumori Fondazione, Napoli, Italy
Abstract :
Double-sided microstrip silicon crystals are being tested as detectors for X-rays in the diagnostic energy range (10-100 keV) for digital radiology. An analog-to-digital-converter and CAMAC based acquisition system has been developed to study the imaging capabilities of a silicon microstrip detector with 100 and 200 μm read-out pitch. The authors present the first images of submillimeter high-contrast phantoms obtained with an X-ray mammography tube operating at high flux density. A preliminary contrast transfer function study was performed; a low frequency contrast of about 0.97 for a high-contrast phantom and a decrease of contrast at a frequency of 5 1p/mm corresponding to the detector intrinsic spatial resolution (100 μm) were measured
Keywords :
X-ray detection and measurement; biomedical equipment; diagnostic radiography; 10 to 100 keV; CAMAC based acquisition system; Si; Si microstrip detector; X-ray mammography tube; analog-to-digital-converter; contrast transfer function; detector intrinsic spatial resolution; diagnostic X-ray detectors; digital radiological imaging; high spatial resolution 2D Si detector; high-contrast phantom; low frequency contrast; read-out pitch; Crystals; Detectors; Digital images; Frequency; Imaging phantoms; Microstrip; Radiology; Silicon; Testing; X-rays;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1992., Conference Record of the 1992 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-0884-0
DOI :
10.1109/NSSMIC.1992.301517
