Constrained least squares projection filtering: A new technique for the reconstruction of emission computed tomographic images
Conference
·
· IEEE Trans. Nucl. Sci.; (United States)
OSTI ID:6700104
A new emission computed tomographic reconstruction technique has been developed. Each projection is fit with an arbitrary functional form which is constrained in shape by the sharpest response which can be obtained in a tomograph. The image is then reconstructed by backprojecting the best estimate projections which have been filtered by a ramp function in the frequency domain. This procedure reduces the variance in image pixel values while maintaining resolution which is near the intrinsic resolution of the tomograph. This paper presents results for both measured and simulated data from a tomograph designed to measure annihilation photons from the decay of positrons.
- Research Organization:
- Univ. of Michigan, Div. of Nuclear Medicine, 3480 Kresge III, Box 552, Ann Arbor, MI 48109-552
- OSTI ID:
- 6700104
- Report Number(s):
- CONF-861007-
- Conference Information:
- Journal Name: IEEE Trans. Nucl. Sci.; (United States) Journal Volume: NS-34:1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
550602* -- Medicine-- External Radiation in Diagnostics-- (1980-)
62 RADIOLOGY AND NUCLEAR MEDICINE
ANNIHILATION
BASIC INTERACTIONS
BETA DECAY
BETA-PLUS DECAY
COMPUTERIZED TOMOGRAPHY
DATA
DECAY
DIAGNOSTIC TECHNIQUES
DIGITAL FILTERS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
EMISSION COMPUTED TOMOGRAPHY
EXPERIMENTAL DATA
FREQUENCY ANALYSIS
FUNCTIONS
IMAGE PROCESSING
IMAGES
INFORMATION
INTERACTIONS
LEAST SQUARE FIT
MASSLESS PARTICLES
MAXIMUM-LIKELIHOOD FIT
NUMERICAL DATA
NUMERICAL SOLUTION
PHOTONS
POSITRON COMPUTED TOMOGRAPHY
PROCESSING
RESOLUTION
SHAPE
SIMULATION
TOMOGRAPHY
62 RADIOLOGY AND NUCLEAR MEDICINE
ANNIHILATION
BASIC INTERACTIONS
BETA DECAY
BETA-PLUS DECAY
COMPUTERIZED TOMOGRAPHY
DATA
DECAY
DIAGNOSTIC TECHNIQUES
DIGITAL FILTERS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
EMISSION COMPUTED TOMOGRAPHY
EXPERIMENTAL DATA
FREQUENCY ANALYSIS
FUNCTIONS
IMAGE PROCESSING
IMAGES
INFORMATION
INTERACTIONS
LEAST SQUARE FIT
MASSLESS PARTICLES
MAXIMUM-LIKELIHOOD FIT
NUMERICAL DATA
NUMERICAL SOLUTION
PHOTONS
POSITRON COMPUTED TOMOGRAPHY
PROCESSING
RESOLUTION
SHAPE
SIMULATION
TOMOGRAPHY