Abstract
We are assembling a high resolution small animal PET scanner. The detector module is composed of a YAP:Ce matrix, consisting of 400 crystals 2×2×30mm3 glued together, and optically isolated by a 5μm thick reflective layer. The matrix is directly coupled to a position sensitive photomultiplier Hamamatsu mod. R2486-06 (PSPMT). Two detector modules are mounted on a rotating gantry. The opposite detectors can be positioned at a distance ranging from 5 to 25cm so that the scanner transaxial FOV (Fiel Of View) is variable in the 2.5–15cm range. The scanner axial FOV is 4cm. The positron test source was 22Na. The system will operate in 3D data acquisition mode. The measured axial spatial resolution at the center using a simple back-projection planar reconstruction algorithm is 2.3mm FWHM after correction for the PSPMT position nonlinearities and for source dimension. By eliminating the full-absorption events (mainly due to multiple interactions in the multi-crystals) the spatial resolution was improved to 1.8mm. This result is very appropriate for small animal PET studies.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
