Title :
A whole body phantom for 3D PET
Author :
Turkington, G. ; Sampson, W.H. ; Ha, J.S. ; Kirven, P.D. ; Jaszczak, R.J.
Author_Institution :
Duke Univ. Med. Center, Durham, NC, USA
Abstract :
Summary form only given. Three-dimensional PET imaging geometries, both on dedicated and hybrid PET systems, are sensitive to radioactivity outside the field of view. In order to evaluate, compare, optimize PET systems, a phantom with large axial extent is required. Based on radioactivity uptake and geometry measurements from FDG PET patients, we have designed and built a phantom to simulate all the effects relevant to 3D imaging but which also has geometrically simplified but otherwise realistic organs. The phantom is 80 cm long, 37 cm wide, and 22 cm deep. Internal features are bladder, liver, heart, lungs, and lung nodules (six spheres). A head is attached to the end. All internal organs are filled via tubing that connects to the outside for fast filling. The phantom has been imaged on both dedicated PET and hybrid PET systems, and example images are given. The fast filling time should allow imaging decay studies with G-11 in which dose or count rate is optimized by image quality measures
Keywords :
biological organs; dosimetry; medical image processing; physiological models; positron emission tomography; 22 cm; 37 cm; 3D imaging; 3D positron emission tomography; 80 cm; bladder; dedicated PET systems; fast filling time; geometrically simplified organs; heart; hybrid PET systems; image quality measures; imaging decay studies; internal features; large axial extent phantom; liver; lung; optimized count rate; optimized dose; radioactivity uptake; whole body phantom; Bladder; Filling; Geometry; Heart; Imaging phantoms; Liver; Lungs; Positron emission tomography; Solid modeling; Whole-body PET;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2000 IEEE
Conference_Location :
Lyon
Print_ISBN :
0-7803-6503-8
DOI :
10.1109/NSSMIC.2000.949210