Contrast-enhanced ultrasonographic imaging diagnosis on assessment of vascularity in liver metastatic lesions

Table 1 Changes of depicted intratumoral vessel numbers.

Grade	CDFI (number of vessels)		PDI (number of vessels)
	Before CA	After CA	Before CA	After CA
0	0	0	0	0
I	7	2	3	0
II	5	10	9	1
III	0	0	0	12

CA: contrast agent.

Table 2 Changes of vessel morphology inside or at periphery of lesions.

Blood flow	CDFI (number of vessels)		PDI (number of vessels)
	Before CA	After CA	Before CA	After CA
No flow signals	1	0	0	0
Spot-like flow signals	9	14	17	21
Short bar-like flow signals	10	15	13	16
Strip-like flow signals	2	4	5	7
Penetrating flow signals	0	0	0	2

CA: contrast agent.