A deconvolution function for single photon emission computed tomography with constant attenuation

Conference · Sat Feb 01 04:00:00 EST 1986 · IEEE Trans. Nucl. Sci.; (United States)

OSTI ID:5880537

Tomitani, T

A shift-invariant spatial deconvolution function for single-photon-emission computerized tomography with constant attenuation is presented. Image reconstruction algorithm is similar to conventional convolution-back-projection algorithm except that exponential weight is applied in backprojection process. The deconvolution function was obtained as a solution of a generalized Schlomilch's integral equation. A method to solve the integral equation is described briefly. The present deconvolution function is incorporated with frequency roll-off and image resolution can be preset. At the extreme of ideal image reconstruction, the deconvolution function is identical to that deduced by Kim et al. and its Fourier transform was proved to be identical to the filter deduced by Tretiak and Delaney and Gullburg and Budinger. Variance of the reconstructed image was analyzed and some numerical results were given. The algorithm was tested with computer simulation.

• Research Organization: Div. of Physics, National Inst. of Radiological Sciences, 9-1, Anagawa 4-Chome, Chiba-shi, 260
• OSTI ID: 5880537
• Report Number(s): CONF-851009-
• Conference Information: Journal Name: IEEE Trans. Nucl. Sci.; (United States) Journal Volume: NS-33:1
• Country of Publication: United States
• Language: English

Related Subjects

550602* -- Medicine-- External Radiation in Diagnostics-- (1980-)
62 RADIOLOGY AND NUCLEAR MEDICINE
ALGORITHMS
COMPUTERIZED SIMULATION
COMPUTERIZED TOMOGRAPHY
DIAGNOSTIC TECHNIQUES
EMISSION COMPUTED TOMOGRAPHY
EQUATIONS
FOURIER TRANSFORMATION
FREQUENCY DEPENDENCE
FUNCTIONS
IMAGE PROCESSING
INTEGRAL EQUATIONS
INTEGRAL TRANSFORMATIONS
MATHEMATICAL LOGIC
NUMERICAL SOLUTION
PROCESSING
SIMULATION
SINGLE PHOTON EMISSION COMPUTED TOMOGRAPHY
TOMOGRAPHY
TRANSFORMATIONS