Table 2.

Comparative analysis of two-stage frameworks for vessel segmentation in fetal 3VV ultrasound images using varied ROI localization strategies

Method	Dice			Mean
	PA	Ao	SVC	IoU	HD	Dice
Deeplabv3 (full-size)	83.49	86.61	73.36	70.74	3.50	81.15
Deeplabv3 + Deeplabv3	82.71	83.79	66.15	67.92	3.58	77.55
Faster-RCNN + Deeplabv3	72.03	67.36	61.42	57.59	4.14	66.93
Yolov5 + Deeplabv3	85.44	87.35	76.52	73.25	3.30	83.11

The optimal value is highlighted in bold (in column)