Title :
Design and evaluation of HEADTOME-IV, a whole-body positron emission tomograph
Author :
Iida, Hidehiro ; Miura, Shuichi ; Kanno, Iwao ; Murakami, Matsutaro ; Takahashi, Kazuhiro ; Uemura, Kazuo ; Hirose, Yoshiharu ; Amano, Masaharu ; Yamamoto, Seiichi ; Tanaka, Kazumi
Author_Institution :
Res. Inst. for Brain & Blood Vessels, Akita, Japan
fDate :
2/1/1989 12:00:00 AM
Abstract :
A whole-body positron emission tomograph called Headtome-IV has been developed, and its physical performance has been investigated. An in-plane spatial resolution of 4.5 mm was realized with stationary sampling at the center of the field of view. The axial slice thicknesses were 9.5 and 9.0 mm for direct and cross planes, respectively. By moving the gantry framework axially, transaxial images of 14 or 21 slices are obtained quasi-simultaneously. The real-time large-scale cache memory system allowed real-time corrections for deadtime and radionuclide decay and real-time weighted integration for the purpose of a rapid calculation of rate-constant images
Keywords :
biomedical equipment; computerised tomography; radioisotope scanning and imaging; HEADTOME-IV; deadtime; in-plane spatial resolution; radionuclide decay; rate-constant images; real-time corrections; real-time large-scale cache memory system; real-time weighted integration; stationary sampling; whole-body positron emission tomograph; Apertures; Biomedical imaging; Blood vessels; Cities and towns; Detectors; Image sampling; Large scale integration; Motion detection; Radioactive decay; Spatial resolution;
Journal_Title :
Nuclear Science, IEEE Transactions on
