PETCT with intravenous contrast can be used for PET ... | 合法醫療器材資訊網

由AKBerthelsen著作·2005·被引用168次—ThisstudydemonstratesthatCTscanswithIVcontrastagentcanbeusedforattenuationcorrectionofthePETdataincombinedmodalityPET/CTscanning, ...

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 is improved and a separate diagnostic CT scan can be avoided. CT with IV contrast can be used for PET attenuation correction, but this may result in a bias in the attenuation factors. The clinical significance of this bias has not been established. Our aim was to perform a prospective clinical study where each patient had CT performed with and without IV contrast agent to establish whether PET/CT with IV contrast can be used for PET attenuation without reducing the clinical value of the PET scan.

Methods: A uniform phantom study was used to document that the PET acquisition itself is not significantly influenced by the presence of IV contrast medium. Then, 19 patients referred to PET/CT with IV contrast underwent CT ...