Radiology 2003 Feb;226(2):577-84
Artifacts at PET and PET/CT Caused by Metallic Hip Prosthetic Material.
Goerres GW, Ziegler SI, Burger C, Berthold T, Von Schulthess GK, Buck A.
Hip prosthetic material and a steel rod were scanned in a water bath of fluorine
18 fluorodeoxyglucose (FDG) with positron emission tomographic (PET) and
PET/computed tomographic (CT) scanners to evaluate the generation of artifacts
adjacent to the metal. The influences of attenuation correction (AC),
positioning of the object, and image reconstruction were examined. Use of CT-
and germanium 68-based AC resulted in generation of artifacts that mimicked
increased FDG uptake. These artifacts were more evident when the object was
moved between the emission and transmission scans. When attenuation-weighted
iterative reconstruction was used, these artifacts were less evident. Copyright
RSNA, 2003
