Performance characteristics of an eight-ring whole body PET scanner

Journal Article · Tue May 01 04:00:00 EDT 1990 · Journal of Computer Assisted Tomography; (USA)

DOI:https://doi.org/10.1097/00004728-199005000-00022· OSTI ID:6765786

Rota Kops, E; Herzog, H; Schmid, A; Holte, S; Feinendegen, L E ^[1]

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1. Institute of Medicine, Juelich (Germany, F.R.)

The technical characteristics of the multislice whole-body positron emission tomographic scanner (model PC4096-15WB Scanditronix) and its performance parameters are described. Spatial resolution at the center of the field of view was found to be 4.9 mm in-plane and 4.6 mm (cross slices) and 6.0 mm (direct slices) in the axial direction. The sensitivity for true and scattered coincidences is approximately 5,000 cps for direct slices and 7,100 cps for cross slices. At an activity concentration of 37 kBq/ml the system deadtime was approximately 5%. By measuring a uniform phantom with a cold cylindrical insert (5.0 cm diameter), the scatter fraction was found to be approximately 5%. The mean global uniformity over all 15 slices was 6.5%, whereas the local uniformity was found to be 4.3%. No systematic nonuniformities were observed. Finally, various methods for attenuation correction (transmission scan, contour finding, ellipse) were utilized to test their effects on the resulting reconstructed images.

• OSTI ID: 6765786
• Journal Information: Journal of Computer Assisted Tomography; (USA), Journal Name: Journal of Computer Assisted Tomography; (USA) Vol. 14:3; ISSN 0363-8715; ISSN JCATD
• Country of Publication: United States
• Language: English

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ALDEHYDES
ANIMALS
ATTENUATION
CARBOHYDRATES
COMPUTERIZED TOMOGRAPHY
DESIGN
DIAGNOSTIC TECHNIQUES
EMISSION COMPUTED TOMOGRAPHY
EVALUATION
FLUORINE ISOTOPES
GALLIUM ISOTOPES
GLUCOSE
HEXOSES
IMAGE PROCESSING
IMAGE SCANNERS
ISOTOPES
MAMMALS
MAN
MOCKUP
MONOSACCHARIDES
ORGANIC COMPOUNDS
PHANTOMS
POSITRON COMPUTED TOMOGRAPHY
PRIMATES
PROCESSING
RESOLUTION
SACCHARIDES
SCATTERING
SPATIAL RESOLUTION
STRUCTURAL MODELS
TOMOGRAPHY
VERTEBRATES