Establishing Reference Values for Thyroid Vascularity Using Ultra-Micro Angiography (UMA) Ultrasound Technology

Area of Science:

• Medical Imaging
• Ultrasound Technology
• Vascular Biology

Background:

• Ultra-Micro Angiography (UMA) is an advanced Doppler technique for visualizing slow blood flow in small vessels.
• Subtraction UMA (sUMA) enhances microvascularity assessment by reducing background tissue interference.
• Establishing reference values for thyroid vascularity using sUMA is essential for understanding thyroid pathology.

Purpose of the Study:

• To establish reference values for thyroid vascularity in healthy individuals using sUMA.
• To assess the reliability and reproducibility of sUMA for thyroid microvascularity evaluation.
• To provide a foundation for future research into thyroid diseases.

Main Methods:

• Prospective, single-center study of 106 healthy participants.
• Multiparametric ultrasound followed by sUMA to quantify thyroid vascularity.
• Color Pixel Percentage (CPP) measured in each thyroid lobe; median values analyzed for reliability and correlation with demographics.

Main Results:

• sUMA demonstrated 100% feasibility and excellent intraobserver reliability (ICC > 0.89).
• Median CPP values were 26.5% for the right lobe and 27.1% for the left lobe, with no significant inter-lobe difference.
• No significant correlation found between CPP values and demographic characteristics.

Conclusions:

• sUMA is a reliable and reproducible method for assessing thyroid microvascularity in healthy individuals.
• The established reference CPP values serve as a baseline for future thyroid pathology studies.
• This technology can potentially improve the diagnostic accuracy of thyroid assessments in clinical practice.