Title :
Small gamma imaging probe with millimeter spatial resolution
Author :
Avery, S. ; Keppel, C. ; Majewski, S. ; Weisenberger, A.G. ; Wojcik, R. ; Zorn, C.
Author_Institution :
Hampton Univ., VA, USA
Abstract :
A small gamma imaging detector is being developed on the basis of either the Hamamatsu R5900-M16 and R5900-M64 multianode PMTs. This device is being developed for use in instances where a small field-of-view (FOV), high position resolution imager can be useful. Specific examples are in-vivo small animal studies and surgical intra-operative probes. Candidate crystal scintillators (NaI(Tl), CsI(Na), and YAP(Ce)), both in plate form and as square pixel arrays were tested for suitability for gamma ray imaging in the 22-122 keV range. CsI(Na) scintillator is shown to be the best choice for practical operation. With a simple and economical design the detector achieved good spatial resolution of 2 mm FWHM in the above energy range. The authors´ first planned use will be in imaging an 125I (27-35 keV) tracer used in small animal (mouse) studies
Keywords :
biological techniques; biomedical equipment; gamma-ray detection; image resolution; photomultipliers; probes; radioisotope imaging; solid scintillation detectors; 2 mm; 22 to 122 keV; 125I tracer; CsI(Na); CsI:Na; Hamamatsu R5900-M16 PMTs; NaI(Tl); NaI:Tl; R5900-M64 multianode PMTs; YAP(Ce); YAP:Ce; YAlO3:Ce; biological research; candidate crystal scintillators; in-vivo small animal studies; medical instrumentation; millimeter spatial resolution; mouse studies; plate form; small gamma imaging probe; square pixel arrays; surgical intraoperative probes; Animals; Gamma ray detection; Gamma ray detectors; High-resolution imaging; Image resolution; Millimeter wave devices; Optical imaging; Probes; Spatial resolution; Surgery;
Conference_Titel :
Nuclear Science Symposium, 1997. IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
0-7803-4258-5
DOI :
10.1109/NSSMIC.1997.670495
