TABLE 3.

Comparison of ΔrCTP values before and after operation between good and poor groups.

	ΔrCBF	ΔrCBV	ΔrMTT	ΔrTTD	ΔrTmax	ΔrFE
Good group(n = 36)	0.164 ± 0.238	–0.07 ± 0.229	0.357 ± 0.270	0.823 ± 0.634	1.056 ± 1.554	1.723 ± 3.116
Poor group(n = 17)	0.085 ± 0.194	0.105 ± 0.169	0.105 ± 0.163	0.193 ± 0.152	0.281 ± 0.384	0.061 ± 0.633
t-value	–1.184	–2.806	–3.556	–5.629	–2.815	–3.070
p-value	0.242	0.007	0.001	< 0.001	0.007	0.004

ΔrCTP, the changes in the relative CTP parameters; CBF, cerebral blood flow; CBV, cerebral blood volume; TTD, time to drain; MTT, mean transit time; Tmax, time to maximal plasma concentration; FE, flow extraction product.