|Titolo||Scintillation crystal readout by multi-APD for event localization|
|Tipo di pubblicazione||Articolo su Rivista peer-reviewed|
|Anno di Pubblicazione||2006|
|Autori||Scafè, R., Montani L., Iurlaro G., Alonge G., Fasolino T., De Vito S., and Della Sala Dario|
|Rivista||Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment|
|Parole chiave||Crystal face, Energy response, Medical imaging, Optical resolving power, Photodiodes, Radioisotopes, Radionuclide imaging, Scintillation counters, Silicon avalanche photodiode|
This work is aimed to assess the feasibility of a gamma-ray scintillation detector for radionuclide imaging characterized by good energy resolution and point-of-interaction measurement at room temperature. To obtain such performances the single-event scintillation light must be read from more than one crystal face. We have preliminarily analyzed the energy response using CsI:Tl crystals and Si-APD. Results concerning energy response are presented in terms of linearity and resolution. The single-APD configuration, chosen as a reference, has shown very good energy linearity in the range 80-662 keV and a 7.6% FWHM energy resolution at 662 keV. Similar linearity results have been obtained for the 5-APD case, while energy resolution worsens down to 13.2% FWHM. These results could be further improved using APD with reduced peripheral dead zones. © 2006 Elsevier B.V. All rights reserved.
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