Takesh Mustafa
Nuclear Medicine Department, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany.
ISRN Oncol. 2012;2012:349351. doi: 10.5402/2012/349351. Epub 2012 Dec 26.
PET is an appropriate method to display the functional activities in target tissue using many types of traces. The visual assessment of PET images plus the semiquantitative parameter (SUV) are the main diagnostic standards considered in identifying the malignant lesion. However, these standards lack occasionally the proper specificity and/or sensitivity. That emphasizes the importance of considering supplemental diagnostic criteria such as the kinetic parameter. The latter gives the way to image the ongoing metabolic processes within the target tissue as well as to identify the alterations occurring at the microscale level before they become observable in the conventional PET-imaging. The importance of kinetic analysis of PET imaging has increased with newly developed PET devices that offer images of good quality and high spatial resolution. In this paper, we highlighted the potential contribution of kinetic analysis in improving the diagnostic accuracy in intracranial tumour, lung tumour, liver tumour, colorectal tumour, bone and soft tissue tumours, and prostate cancer. Moreover, we showed that the appropriate therapy monitoring can be best achieved after considering the kinetic parameters. These promising results indicate that the kinetic analysis of PET imaging may become an essential part in preclinical and clinical molecular imaging as well.
正电子发射断层扫描(PET)是一种使用多种示踪剂来显示靶组织功能活动的合适方法。PET图像的视觉评估加上半定量参数(标准化摄取值,SUV)是识别恶性病变时考虑的主要诊断标准。然而,这些标准偶尔缺乏适当的特异性和/或敏感性。这凸显了考虑补充诊断标准(如动力学参数)的重要性。动力学参数能够对靶组织内正在进行的代谢过程进行成像,并在传统PET成像中观察到之前识别微观层面发生的变化。随着新开发的具有高质量图像和高空间分辨率的PET设备的出现,PET成像动力学分析的重要性日益增加。在本文中,我们强调了动力学分析在提高颅内肿瘤、肺部肿瘤、肝脏肿瘤、结直肠肿瘤、骨与软组织肿瘤以及前列腺癌诊断准确性方面的潜在贡献。此外,我们表明,在考虑动力学参数后,可以最好地实现适当的治疗监测。这些有前景的结果表明,PET成像的动力学分析也可能成为临床前和临床分子成像的重要组成部分。