Attenuation Correction for Small Animal PET Images: A Comparison of Two Methods

<table>Profiles traced across the rat heart on <svg height="15.8375" id="M70" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 21.1625 15.8375" width="21.1625" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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<g transform="matrix(.017,-0,0,-.017,12.112,15.775)"><path d="M493 503l-29 -4q-13 56 -28 80q-13 22 -35.5 29.5t-78.5 7.5h-76q-22 0 -27.5 -5t-5.5 -27v-238h103q66 0 82.5 12t25.5 62h29v-193h-29q-9 54 -25.5 67t-82.5 13h-103v-181q0 -64 15 -78.5t84 -19.5v-28h-272v28q61 5 74.5 19.5t13.5 78.5v399q0 64 -13 78t-72 19v28
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</svg>-FDG PET image. The position of the profile on the image is shown on the right side of the plot. The thick line represents the counts measured across the uncorrected PET image, the dotted line is for the AC method based on PET segmentation, and the full line is the profile drawn on the CT-AC image.</table>

Computational and Mathematical Methods in Medicine

fig14

Figure 14

Figure 14: Attenuation Correction for Small Animal PET Images: A Comparison of Two Methods 