Performance characteristics of an eight-ring whole body PET scanner
- 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), Vol. 14:3; ISSN 0363-8715
- Country of Publication:
- United States
- Language:
- English
Similar Records
Impact of target-to-background ratio, target size, emission scan duration, and activity on physical figures of merit for a 3D LSO-based whole body PET/CT scanner
A high resolution animal PET scanner using compact PS-PMT detectors
Related Subjects
62 RADIOLOGY AND NUCLEAR MEDICINE
IMAGE SCANNERS
EVALUATION
ATTENUATION
DESIGN
FLUORINE ISOTOPES
GALLIUM ISOTOPES
GLUCOSE
IMAGE PROCESSING
MAN
PHANTOMS
POSITRON COMPUTED TOMOGRAPHY
SCATTERING
SPATIAL RESOLUTION
ALDEHYDES
ANIMALS
CARBOHYDRATES
COMPUTERIZED TOMOGRAPHY
DIAGNOSTIC TECHNIQUES
EMISSION COMPUTED TOMOGRAPHY
HEXOSES
ISOTOPES
MAMMALS
MOCKUP
MONOSACCHARIDES
ORGANIC COMPOUNDS
PRIMATES
PROCESSING
RESOLUTION
SACCHARIDES
STRUCTURAL MODELS
TOMOGRAPHY
VERTEBRATES
655003* - Medical Physics- Dosimetry
550601 - Medicine- Unsealed Radionuclides in Diagnostics