Given the extreme rarity of intracranial dissemination from thyroid carcinoma, population-level brain imaging is not warranted; instead, AI is best positioned as a secondary alert and triage tool in high-risk DTC/FTC cohorts—integrating age, histologic subtype, presence of distant metastasis or RAI-refractory disease, serum thyroglobulin trajectories, and neurologic symptoms—to trigger indicated contrast-enhanced MRI and whole-body evaluation (21). Here, TG is linked to thyroid gland carcinoma.