The effective attenuation coefficient as a function of as well as its percentage difference from attenuation coefficient at the weighted average assuming water as attenuating material.
SPECT images from the uniform tank filled with . Images are labeled with the attenuation correction method used for reconstruction. The edge artifact is clearly visible without attenuation correction (lower right image).
Line profiles from the experimental SPECT study of the uniform tank.
SPECT images reconstructed with a maximum-likelihood algorithm with (upper left) corrections for photon attenuation (AC) and collimator response (CR), and (upper right) corrections for photon attenuation and scatter (SC), from the uniform tank filled with . Line profiles (bottom) are also shown, respectively.
Absorption of gamma-rays by sodium iodide.
Article metrics loading...
Full text loading...