Follow-Up of High-Grade Glial Tumor; Differentiation of Posttreatment Enhancement and Tumoral Enhancement by DCE-MR Perfusion

Table 6

Mean and Std deviation of DCE-MRP metrics measured from ERC, NNA, and CLNA and their subtracted values are given for both PT and TM groups. Intergroup comparison among permeability metrics, Ktrans, IAUC, and Kep, and the differences of Ktrans and IAUC from both NNA and CLNA are significantly different.

Mean	Std deviation		t
ERC ktrans	pt	0.01	0.00	−4.291	0.000
	tm	0.02	0.01
ERC kep	pt	0.52	0.37	2.475	0.046
	tm	0.17	0.11
ERC ve	pt	0.20	0.12	−1.075	0.290
	tm	0.27	0.15
ERC IAUC	pt	1.58	0.47	−2.540	0.016
	tm	2.83	1.28
CLNA ktrans	pt	0.01	0.01	0.332	0.742
	tm	0.01	0.01
CLNA kep	pt	1.56	1.38	−0.621	0.539
	tm	2.04	1.79
CLNA ve	pt	0.06	0.05	−0.809	0.425
	tm	0.08	0.08
CLNA IAUC	pt	0.55	0.55	0.786	0.438
	tm	0.41	0.36
NNA ktrans	pt	0.01	0.01	1.579	0.131
	tm	0.01	0.01
NNA kep	pt	1.88	1.52	1.017	0.348
	tm	1.21	0.75
NNA ve	pt	0.07	0.06	0.163	0.872
	tm	0.06	0.08
NNA IAUC	pt	0.80	0.57	1.224	0.236
	tm	0.53	0.40
ERC−CLNA ktrans	pt	0.00	0.01	−2.235	0.033
	tm	0.02	0.01
ERC-CLNA kep	pt	−1.12	1.30	0.987	0.332
	tm	−1.87	1.75
ERC-CLNA ve	pt	0.15	0.13	−0.547	0.588
	tm	0.19	0.13
ERC-CLNA IAUC	pt	1.14	0.59	−2.219	0.034
	tm	2.42	1.36
ERC-NNA ktrans	pt	0.00	0.01	−4.019	0.001
	tm	0.02	0.01
ERC-NNA kep	pt	−1.43	1.30	−0.823	0.420
	tm	−1.07	0.72
ERC-NNA ve	pt	0.16	0.07	−0.898	0.380
	tm	0.22	0.15
ERC-NNA IAUC	pt	0.69	0.56	−2.772	0.012
	tm	1.98	1.07