Metallic implants are known to generate bright and dark streaking artifacts in x-ray computedtomography (CT) images, which in turn propagate to corresponding functional positron emissiontomography (PET) images during the CT-based attenuation correction procedure commonlyused on hybrid clinical PET/CT scanners. Therefore, visual artifacts and overestimation and/orunderestimation of the tracer uptake in regions adjacent to metallic implants are likely to occur andas such, inaccurate quantification ...