Table 1.

Quantitative changes of the flow resistive indices for the two vessels before and after PDTs.

Flow RI		Before PDT	After 1st PDT	After 2nd PDT
Vessel 1	Mean	0.4739	0.6009	0.6933
	Std. dev.	0.049999	0.025065	0.034093
Vessel 2	Mean	0.5604	0.6479	0.7628
	Std. dev.	0.047829	0.0258	0.027635