Title :
In-plane resolution characteristics for a positron emission tomograph: Headtome IV
Author :
Yamamoto, S. ; Iida, H. ; Amano, M. ; Miura, S. ; Hirose, Y. ; Kanno, I.
Author_Institution :
Shimadzu Corp., Kyoto, Japan
fDate :
2/1/1989 12:00:00 AM
Abstract :
Headtome IV is a PET (positron emission tomograph) which consists of 96 detector units per ring. Each detector unit consists of eight 3-mm-wide bismuth germanate (BGO) crystals, a pair of light guides, and a dual module photomultiplier tube and uses pulse-height-ratio logic to determine the crystal of interaction. In-plane resolution of 4.5 mm full width at half maximum (FWHM) was obtained without any sampling motion such as wobble. The authors investigated three in-plane resolution characteristics of the Headtome IV, i.e. resolution with distance from the center, variation of the in-plane resolution and the effect of gain imbalance
Keywords :
biomedical equipment; computerised tomography; radioisotope scanning and imaging; BiGeO; Headtome IV; PET; dual module photomultiplier tube; light guides; positron emission tomograph; pulse-height-ratio logic; Blood vessels; Crystals; Detectors; Fluctuations; Image reconstruction; Image resolution; Motion detection; Positron emission tomography; Radioactive decay; Sampling methods;
Journal_Title :
Nuclear Science, IEEE Transactions on
