Title :
Analysis of optimum diameter of orbit of transmission line source in positron emission tomograph
Author :
Yamamoto, S. ; Iida, Hiroyuki ; Amano, M. ; Miura, S. ; Hirose, Y. ; Kanno, I.
Author_Institution :
Res. Inst. of Brain & Blood Vessels Akita, Japan
fDate :
2/1/1989 12:00:00 AM
Abstract :
The relationship between the ring diameter of the transmission line source in a positron emission tomograph and the signal-to-noise ratio of the transmission data is estimated. It is confirmed that a smaller diameter improves the signal-to-noise ratio of both transmission and emission images. This signal-to-noise ratio improvement is clearly shown as an improved count density of true events. It is shown that the count density is inversely proportional to the diameter
Keywords :
computerised tomography; radioisotope scanning and imaging; PET; count density; emission images; positron emission tomograph; ring diameter; signal-to-noise ratio; transmission data; transmission line source; true events; Attenuation; Detectors; Extraterrestrial measurements; Image reconstruction; Imaging phantoms; Positron emission tomography; Radioactive decay; Rotation measurement; Signal to noise ratio; Transmission lines;
Journal_Title :
Nuclear Science, IEEE Transactions on
