Superb Microvascular Imaging Compared with Contrast-Enhanced Ultrasound for Assessing Laser Ablation Treatment of Benign Thyroid Nodules

Table 2

Changes in nodule volume and VRR.

	Pre-treatment	1st month	3rd month	6th month	12th month	P value
Nodules, n	256	234	223	228	211	—
Mean volume, mL	10.22 ± 5.63; (3.12~26.58)	6.11 ± 2.93; (2.08~21.45)	4.61 ± 2.13; (1.66~14.61)	2.37 ± 1.22; (0.40~8.60)	0.47 ± 0.33; (0.07~1.86)	<0.001
Largest diameter, cm	3.28 ± 1.55; (2.01~4.10)	2.74 ± 1.18; (1.62~3.83)	2.47 ± 0.99; (1.25~3.31)	1.93 ± 0.89; (0.75~2.33)	1.13 ± 0.56; (0.42~1.44)	0.002
VRR, %	—	40.25	54.98	76.83	95.45	<0.001