Correlation of Color Doppler Sonography and Peripheral Thyroid Hormone Levels in thyrotoxicosis

Abstract

Purpose: Aim of this study was to evaluate the correlation between the gray-scale & Color Doppler Ultrasonography (CDUS) findings and thyroid hormone values in patients with thyrotoxicosis due to thyroiditis and to question their applicability in daily practices.

 Methods: The CDUS parameters like peak systolic and end diastolic velocities of superior thyroid artery and resistive index values were compared with thyroid d hormone levels in 60 patients with known thyroiditis. Forty-two healthy cases were also studies as control.

Results: Intergroup comparison did not show any significant difference in the CDUS parameters like peak systolic and end diastolic velocities (PSV and EDV) of superior thyroid artery (STA) but a significant correlation was found for the resistive index value (RI) of the superior thyroid artery (p< 0.05). In patients with thyroiditis, positive correlation was found between free T3,free T4 and CDUS parameters (p<0.05).

Conclusion: Color Doppler ultrasonography parameters has good correlation with serum thyroiod hormone level in patients with thyrotoxicosis caused by thyroiditis. sonographic analysis lacks this diagnostci accuracy.