The current perception of using contrast-enhanced CT (CECT) for attenuation correction
(AC) is that of caution, as it might lead to erroneously elevated 18F-FDG uptake on the PET …

CT images represent essentially noiseless maps of photon attenuation at a range of 40–140
keV. Current dual-modality PET/CT scanners transform them into attenuation coefficients at …

Purpose If the CT scan of a combined PET/CT study is performed as a full diagnostic quality
CT scan including intravenous (IV) contrast agent, the quality of the joint PET/CT procedure …

This study was performed to evaluate a possible artifact related to the administration of
intravascular contrast agent in dual-modality PET/CT imaging. Methods: Thirty oncology …

Purpose Quantitative image reconstruction in positron emission tomography (PET) requires
an accurate attenuation map of the object under study for the purpose of attenuation …

Standard application of CT intravenous contrast agents in combined PET/CT may lead to
high-density artifacts on CT and attenuation-corrected PET. To avoid associated diagnostic …

OBJECTIVES. The use of IV contrast media in PET/CT can result in an overestimation of PET
attenuation factors that potentially can affect interpretation. The objective of this study was to …

Since its introduction in 1998, dual-modality PET/CT imaging has received great attention in
the medical community. For the first time, patients can be examined with both CT and PET in …

Abstract Purpose In PET/CT, CT-derived attenuation factors may influence standardised
uptake values (SUVs) in tumour lesions and organs when compared with stand-alone PET …

Our aim was to determine the diagnostic limitations of low-dose, unenhanced CT scans
performed for anatomic reference and attenuation correction during PET/CT. Methods: The …