A Modified Post Processing Correction Matrix For SPECT

D. J. Macey; G. L. DeNardo; S. J. DeNardo; J. A. Seibert

doi:10.1117/12.966696

1 January 1986 A Modified Post Processing Correction Matrix For SPECT

D. J. Macey, G. L. DeNardo, S. J. DeNardo, J. A. Seibert

Proceedings Volume 0671, Physics and Engineering of Computerized Multidimensional Imaging and Processing; (1986) https://doi.org/10.1117/12.966696
Event: Physics and Engineering of Computerized Multidimensional Imaging and Processing, 1986, Newport Beach, CA, United States

Abstract

A post reconstruction method of attenuation compensation for Single Photon Emission Computed Tomography (SPECT) has been investigated that offers a new approach to the problem of quantitation. A modified correction matrix is generated for attenuation compensation in which the Linear Attenuation Coefficient (LAC) for each pixel is assigned a value depending on the radial distance of the pixel from the true section boundary. Attenuation compensation of transverse section images of small and large volume sources of Tc-99m in phantoms using this modified matrix indicated that a known quantity of radionuclide could be determined to better than 10%. The scatter fraction was estimated as the difference in the corrected section images using a multiplicative matrix generated with a constant LAC for each pixel and the modified matrix proposed in this report.

Citation Download Citation

D. J. Macey, G. L. DeNardo, S. J. DeNardo, and J. A. Seibert "A Modified Post Processing Correction Matrix For SPECT", Proc. SPIE 0671, Physics and Engineering of Computerized Multidimensional Imaging and Processing, (1 January 1986); https://doi.org/10.1117/12.966696

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