Title :
High resolution block detectors for PET
Author :
Yamashita, T. ; Watanabe, M. ; Shimizu, K. ; Uchida, H.
Author_Institution :
Hamamatsu Photonics KK, Japan
fDate :
4/1/1990 12:00:00 AM
Abstract :
New high-resolution blocks detectors in which BGO scintillators are coupled to a position-sensitive photomultiplier tube (PMT), were developed for positron emission tomography (PET) applications. The block detectors, which use two different BGO scintillator structures, were constructed and evaluated: one is a 1.7-mm-wide BGO array which provides a coincidence detector resolution of less than 2 mm FWHM (full width at half maximum) and the other is a BGO block having comb-shaped slits in it, which has a potential capability of improving the resolution uniformity of a PET system because of its ability to detect the depth-of-interaction of γ-rays in the scintillator. The application of these detectors to a PET system for animal studies is discussed
Keywords :
biomedical equipment; bismuth compounds; coincidence techniques; computerised tomography; gamma-ray detection and measurement; germanium compounds; photomultipliers; position sensitive particle detectors; radioisotope scanning and imaging; scintillation counters; γ-rays; Bi12GeO20; PET; animal studies; coincidence detector resolution; comb-shaped slits; depth-of-interaction; high-resolution blocks detectors; position-sensitive photomultiplier tube; positron emission tomography; resolution uniformity; scintillators; Crystals; Energy measurement; Energy resolution; Photomultipliers; Photonics; Position sensitive particle detectors; Positron emission tomography; Radioactive decay; Spatial resolution; Time measurement;
Journal_Title :
Nuclear Science, IEEE Transactions on
