PMID: 25737424Mar 5, 2015Paper

Current status of PET imaging of differentiated thyroid cancer with second generation radiopharmaceuticals

The Quarterly Journal of Nuclear Medicine and Molecular Imaging : Official Publication of the Italian Association of Nuclear Medicine (AIMN) [and] the International Association of Radiopharmacology (IAR), [and] Section of the Society of Radiopharmaceutica
C LauriA Signore

Abstract

Although the prognosis of differentiated thyroid cancer (DTC) is favorable, some histotypes show worst clinical outcome and higher risk of recurrence. Serum thyroglobulin (Tg) levels and 131I-whole-body-scan (WBS), together with neck ultrasound (US), represent the golden standard for DTC follow-up. Nevertheless, the relatively high frequency of patients with high Tg levels and negative WBS requires further investigations by using new imaging modalities. The availability of whole body positron emission tomography (PET) methods, in parallel with the advances in radiochemistry, offer a wide substrate for many solutions. To this day ¹⁸F-fluoro-deoxy-glucose (¹⁸F-FDG) PET/CT still represents the imaging of choice in follow-up of patients with high serum Tg and negative ¹³¹I-WBS but in the last decades the research has focused on finding "second generation" radiopharmaceuticals for PET imaging, with both diagnostic and prognostic purposes, aiming to change the way to image thyroid cancer. Moreover, the use of various PET radiopharmaceuticals, that offer the possibility to explore different pathways involved in thyroid cancer, could find important applications in the near future for clinical decision making in order to program tailore...Continue Reading

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