Study on the use of transmission scans for whole body PET attenuation correction
- Univ. of California, Los Angeles, CA (United States). Dept. of Molecular and Medical Pharmacology
Transmission scans for attenuation correction of whole body PET studies are not acquired routinely, since noise considerations impose acquisition time constraints that make conventional scanning techniques infeasible. The aim of this work is to optimize data acquisition and processing parameters and improve the SNR of whole body transmission scans, in order to achieve within a reasonable time frame, an attenuation correction of the same quality as in cardiac PET. Methods to improve the scanner sensitivity by using additional coincidence planes, as well as smoothing methods for the randoms and the transmission data were investigated. Phantom and patient studies show that transmission scans are feasible for whole body PET studies, with equivalent noise introduced in the chest area as in a typical cardiac PET attenuation correction, at fractions of the time required by conventional transmission scan protocols.
- DOE Contract Number:
- FC03-87ER60615
- OSTI ID:
- 7124027
- Report Number(s):
- CONF-931051--
- Journal Information:
- IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States) Vol. 41:4PT1; ISSN 0018-9499; ISSN IETNAE
- Country of Publication:
- United States
- Language:
- English
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62 RADIOLOGY AND NUCLEAR MEDICINE
COMPUTERIZED TOMOGRAPHY
COUNTING TECHNIQUES
DIAGNOSTIC TECHNIQUES
EMISSION COMPUTED TOMOGRAPHY
IMAGE PROCESSING
OPTIMIZATION
POSITRON COMPUTED TOMOGRAPHY
PROCESSING
SENSITIVITY ANALYSIS
TOMOGRAPHY
WHOLE-BODY COUNTING