Constrained least squares filtering in high resolution PET and SPECT imaging
Conference
·
· IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (USA)
OSTI ID:6871944
- Michigan Univ., Ann Arbor, MI (USA). Div. of Nuclear Medicine
Constrained least squares filtering is a technique which employs {ital a priori} tomograph response information for the filtering of projection data prior to the filtered backprojection of radionuclide distribution images. This paper describes a simulation study which evaluates the performance of this algorithm as a function of the sampling density within each projection of the radon transform. The results of this evaluation demonstrate that the efficient application of this algorithm requires higher sampling densities than are typically employed in high resolution PET and SPECT. Therefore, application of this algorithm requires software and/or hardware modification of the data acquisition sampling schemes employed in tomographic systems.
- OSTI ID:
- 6871944
- Report Number(s):
- CONF-900143--
- Conference Information:
- Journal Name: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (USA) Journal Volume: 37:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
440103* -- Radiation Instrumentation-- Nuclear Spectroscopic Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
550601 -- Medicine-- Unsealed Radionuclides in Diagnostics
62 RADIOLOGY AND NUCLEAR MEDICINE
ALGORITHMS
CALCULATION METHODS
COMPUTERIZED TOMOGRAPHY
DATA ACQUISITION
DIAGNOSTIC TECHNIQUES
DIAGNOSTIC USES
EMISSION COMPUTED TOMOGRAPHY
FUNCTIONS
IMAGE PROCESSING
IMAGE SCANNERS
LEAST SQUARE FIT
MATHEMATICAL LOGIC
MAXIMUM-LIKELIHOOD FIT
NUMERICAL SOLUTION
PERFORMANCE
POSITRON COMPUTED TOMOGRAPHY
PROCESSING
SINGLE PHOTON EMISSION COMPUTED TOMOGRAPHY
SPECTRAL DENSITY
SPECTRAL FUNCTIONS
TOMOGRAPHY
USES
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
550601 -- Medicine-- Unsealed Radionuclides in Diagnostics
62 RADIOLOGY AND NUCLEAR MEDICINE
ALGORITHMS
CALCULATION METHODS
COMPUTERIZED TOMOGRAPHY
DATA ACQUISITION
DIAGNOSTIC TECHNIQUES
DIAGNOSTIC USES
EMISSION COMPUTED TOMOGRAPHY
FUNCTIONS
IMAGE PROCESSING
IMAGE SCANNERS
LEAST SQUARE FIT
MATHEMATICAL LOGIC
MAXIMUM-LIKELIHOOD FIT
NUMERICAL SOLUTION
PERFORMANCE
POSITRON COMPUTED TOMOGRAPHY
PROCESSING
SINGLE PHOTON EMISSION COMPUTED TOMOGRAPHY
SPECTRAL DENSITY
SPECTRAL FUNCTIONS
TOMOGRAPHY
USES