Task: Answer Verification
Input (English): Question: Are thyroid vascularity and blood flow dependent on serum thyroid hormone levels : studies in vivo by color flow doppler sonography?
Answer: An increase in both intrathyroidal vascularity and blood velocity was observed in patients with spontaneous hyperthyroidism but not in thyrotoxicosis due to either ingestion of thyroid hormones or to a thyroidal destructive process. The slightly increased vascularity and blood velocity observed in patients with hypothyroid Hashimoto's thyroiditis suggests that thyroid stimulation by either TSH-receptor antibody or TSH is responsible for the increased thyroid blood flow.
Output (English): no