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Updated: May 27, 2026

A Practical Guide for the Production and PET/CT Imaging of 68Ga-DOTATATE for Neuroendocrine Tumors in Daily Clinical Practice
Published on: April 17, 2019
PET/CT imaging of thyroid cancer
1Division of Nuclear Medicine, Stanford University Medical Center, Stanford, CA, USA.
Positron emission tomography (PET) imaging, particularly F-18 FDG PET/CT, aids in detecting differentiated thyroid cancer (DTC) recurrence. This technology helps identify aggressive cancer cells and guides treatment resistance assessment.
Area of Science:
- Nuclear Medicine
- Oncology
- Medical Imaging
Background:
- Positron emission tomography (PET) is a sensitive, minimally invasive imaging technique for cancer biology.
- F-18 FDG PET/CT is established for differentiated thyroid cancer (DTC), especially with elevated thyroglobulin (Tg) and negative iodine scans.
- F-18 FDG uptake correlates with less differentiated or dedifferentiated thyroid cancer cells, indicating potential resistance to iodine treatment.
Purpose of the Study:
- To review the established role and emerging applications of PET/CT imaging in differentiated thyroid cancer (DTC).
- To highlight the utility of F-18 FDG PET/CT in detecting DTC recurrence and guiding management.
- To explore the potential of other radiopharmaceuticals in DTC imaging.
Main Methods:
- Review of literature on F-18 FDG PET/CT and other radiopharmaceuticals in differentiated thyroid cancer (DTC).
- Analysis of F-18 FDG uptake patterns and their correlation with tumor biology and prognosis.
- Comparison of F-18 FDG PET/CT with Iodine PET/CT for DTC imaging.
Main Results:
- F-18 FDG uptake in DTC is associated with dedifferentiation, tumor size, capsular invasion, and poor prognosis.
- Early detection of DTC recurrence via PET/CT improves outcomes.
- F-18 FDG PET/CT is valuable for anaplastic and medullary thyroid cancer management.
- Iodine PET/CT offers similar imaging capabilities to Iodine WBS with slightly degraded spatial resolution.
- Other agents like Ga-DOTATOC and F-18 DOPA may complement F-18 FDG PET/CT.
Conclusions:
- F-18 FDG PET/CT is a crucial tool for differentiated thyroid cancer (DTC) detection, recurrence assessment, and management.
- PET/CT imaging provides insights into tumor biology, guiding treatment strategies for various thyroid cancer types.
- Emerging radiopharmaceuticals show promise for enhancing diagnostic accuracy in recurrent thyroid cancer.
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