Title :
Optimizing rod window width in positron emission tomography
Author :
Jones, W.F. ; Digby, W.M. ; Luk, W.K. ; Casey, M.E. ; Byars, L.G.
Author_Institution :
CTI PET Systems, Inc., Knoxville, TN, USA
Abstract :
A technique that determines optimal rod window width for rotating rod transmission studies in positron emission tomography (PET) is discussed. Rod windowing reduces noise in rotating rod transmission studies. Lines-of-response (LOR) which intersect the rods generate primarily true coincidence events. LORs which pass far from the rods generate random and scatter events. Since the angular position of the rotating rods is known in real-time, LORs, which produce mostly noise are gated off
Keywords :
computerised tomography; radioisotope scanning and imaging; lines-of-response; medical diagnostic imaging; nuclear medicine; positron emission tomography; random events; rod window width optimization; scatter events; true coincidence events; Attenuation measurement; Delay; Equations; Extraterrestrial measurements; National electric code; Noise measurement; Noise reduction; Positron emission tomography; Radioactive decay; Scattering;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1992., Conference Record of the 1992 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-0884-0
DOI :
10.1109/NSSMIC.1992.301085
