Biomedical Engineering Reference
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FIGURE11.9: Effect of ignoring cortical bone during AC. (A) PET image
reconstructed using the original CT image. (B) PET image reconstructed
using the same CT image with all bone structures set to the HU value of soft
tissue thus simulating a best case scenario of MR-AC where bone attenuation
is ignored. (C) Relative difference (%) between (A) and (B) illustrating the
largest effect inside the skeleton. Note, voxels set to white in low uptake regions
with SUV < 0.2 in the original PET image.
 
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