PET/CT: Focal lung uptake of 18F-fluordeoxyglucose on PET but no structural alterations on CT

Revista Espa?ola de Medicina Nuclear (English Edition) Pub Date : 2010-05-01 DOI:10.1016/S1578-200X(10)70021-8

R. Sánchez-Sánchez, A. Rodríguez-Fernández, Á. Ramírez-Navarro, M. Gómez-Río, C. Ramos-Font, J.M. Llamas-Elvira

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引用次数: 1

Abstract

The combination of positron emission tomography (PET) and computed tomography (CT) in a single device (PET/CT) provides a powerful diagnostic tool opening 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 the artefacts which may be found is necessary. We report four cases performed during the follow up diagnosis of an oncology study performed with ¹⁸F-FDG-PET/CT. This study showed focal uptake in the lung parenchyma in the PET study in all the cases, with no structural lesions being found on 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.

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PET/CT: PET显示肺局灶性18f -氟脱氧葡萄糖摄取，但CT未见结构改变

正电子发射断层扫描(PET)和计算机断层扫描(CT)在一个设备上的结合(PET/CT)提供了一个强大的诊断工具，为成像诊断开辟了新的视野。为了正确解释PET/CT研究，有必要了解18f -氟脱氧葡萄糖(FDG)的生物分布、生理变异以及陷阱，包括可能发现的伪影。我们报告4例在18F-FDG-PET/CT的肿瘤学研究中进行的随访诊断。本研究所有病例PET扫描均显示肺实质局灶性摄取，CT扫描未见结构性病变。其中三名患者的放射性示踪剂外渗和最近使用的注射方案的改变表明，人工制品是造成这些差异的原因。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Revista Espa?ola de Medicina Nuclear (English Edition)

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