Premium
Vector implementation of Chang's attenuation correction method for single photon emission computed tomography
Author(s) -
Sloboda Ronald S.
Publication year - 1987
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.595983
Subject(s) - attenuation , attenuation coefficient , correction for attenuation , single photon emission computed tomography , computed tomography , optics , emission computed tomography , photon , tomography , point (geometry) , physics , algorithm , mathematics , computer science , mathematical analysis , nuclear medicine , geometry , positron emission tomography , medicine , radiology
A vector version of Chang's attenuation correction method for single photon emission computed tomography accommodating arbitrary convex body contours is presented and its implementation on a general purpose array processor described. For a constant linear attenuation coefficient μ=0.10 cm − 1 and contour shapes similar to those encountered in clinical work, correction factors calculated with the vector algorithm are the same to within a few percent as those obtained using the original Chang method. Typical execution speed of the new algorithm is 0.01 s/correction factor for a 64 point contour.