• 作者：R. Sá ; nchez-Sá ; nchez ; A. Rodr&#237 ; guez-Ferná ; ndez ; ^{antonio.rodriguez.fernandez.sspa@juntadeandalucia.es} ; Á ; . Ram&#237 ; rez-Navarro ; M. Gó ; mez-R&#237 ; o ; C. Ramos-Font ; J.M. Llamas-Elvira
• 关键词：Tomografí ; a por emisió ; n de positrones/tomografí ; a computarizada ; Artefactos ; Focos pulmonares ; Falsos positivos ; É ; mbolos
• 刊名：Revista Espa帽ola de Medicina Nuclear
• 出版年：2010
• 期刊代码：pca315_02126982
• 类别：med
• 出版时间：May-June 2010
• 卷：29
• 期：3
• 页码：131-134
• 文件大小：3798 K

The combination of positron emission tomography (PET) and computed tomography (CT) in a single device (PET/CT) offers a powerful diagnostic tool that opens up new horizons for imaging diagnosis.

In order to correctly interpret PET/CT studies, knowledge of the biodistribution of ¹⁸F-fluorodeoxyglucose (FDG), the physiological variants as well as the pitfalls, including artefacts, which may be found, is necessary. We report four cases performed during the follow-up diagnostic context of an oncology study performed with ¹⁸F-FDG-PET/CT. In every case, this study showed focal uptake in the lung parenchyma in the PET study with no structural lesions being found on the CT scan. Radiotracer extravasation in three of these patients and a recent change in the injection protocol used suggest that an artefact was responsible for these discrepancies.