Clinically, single radiotracer positron emission tomography (PET) imaging is a commonly used examination method; however, since each radioactive tracer reflects the information of only one kind of cell, it easily causes false negatives or false positives in disease diagnosis. Therefore, reasonably combining two or more radiotracers is recommended to improve the accuracy of diagnosis and the sensitivity and specificity of the disease when conditions permit.

中文翻译：

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技术说明：FDG 和/或 MR 内核引导的双示踪 PET 图像重建的初步研究

临床上，单发正电子发射断层扫描（PET）成像是一种常用的检查方法；然而，由于每个放射性示踪剂只反映一种细胞的信息，因此在疾病诊断中容易造成假阴性或假阳性。因此，在条件允许的情况下，建议合理组合两种或两种以上放射性示踪剂，以提高诊断的准确性和疾病的敏感性和特异性。