Title :
Evaluation of volume imaging with the HEAD PENN-PET scanner
Author :
Karp, J.S. ; Freifelder, R. ; Kinahan, P.E. ; Geagan, M.J. ; Muehllehner, G. ; Shao, L. ; Lewitt, R.M.
Author_Institution :
Dept. of Radiol., Pennsylvania Univ., Philadelphia, PA, USA
fDate :
30 Oct-5 Nov 1994
Abstract :
A volume-imaging PET scanner for brain, animal, and pediatric imaging has been designed and built to achieve high performance, specifically in sensitivity and spatial resolution. The scanner is unique in its use of a single annular crystal of NaI(Tl), which allows a 30 cm diameter patient port and an axial field-of-view of 25.6 cm with a maximum axial acceptance angle a of ±26°. By using a narrow photopeak energy window, this leads to high sensitivity with relatively low scatter and randoms. Image resolution is 3.5 mm in both the transverse and axial directions. Images are reconstructed with 128 slices, and are presented for phantom and patient studies (FDG) with both the multi-slice rebinning and the 3D-reprojection algorithm
Keywords :
biomedical equipment; brain; image reconstruction; image resolution; medical image processing; positron emission tomography; 25.6 cm; 30 cm; 3D-reprojection algorithm; HEAD PENN-PET scanner; NaI:Tl; animal imaging; axial directions; axial field-of-view; brain; high performance; image reconstruction; image resolution; maximum axial acceptance angle; multi-slice rebinning; narrow photopeak energy window; patient studies; pediatric imaging; phantom; relatively low scatter; sensitivity; single annular crystal; spatial resolution; transverse directions; volume imaging; volume-imaging PET scanner; Animals; Biomedical imaging; Detectors; Head; High-resolution imaging; Image reconstruction; Positron emission tomography; Reconstruction algorithms; Scattering; Spatial resolution;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1994., 1994 IEEE Conference Record
Conference_Location :
Norfolk, VA
Print_ISBN :
0-7803-2544-3
DOI :
10.1109/NSSMIC.1994.474700
