Table 3. . Postoperative surveillance strategy based on American Thyroid Association risk category.

Investigation	6 months	12 months	18 months	24 months
Thyroglobulin	All	All	All	All
Ultrasound neck	–	All	–	All
Diagnostic RAI scan	–	–	Intermediate/high risk	–
CT/MRI	–	High risk	–	High risk
PET scan	–	High risk	–	High risk

All low, intermediate and high risk.

CT: Computed tomography; RAI: Radioactive iodine.

Data taken from [90].