Table 2:

Analysis of the lesion load measurement and relative comparisons of the DIR versus the FLAIR and T2-weighted TSE sequences

Region	DIR^*	FLAIR^*	T2TSE^*	Relative Comparison (%)^†
Region	DIR^*	FLAIR^*	T2TSE^*	DIR/FLAIR	P Value^‡	DIR/T2 TSE	P Value^‡
Infratentorial	39	25	27	56	0.02	44	0.02
Periventricular	85	81	76	5	0.16	12	0.03
Juxtacortical	54	57	49	−6	0.08	10	0.18
Mixed WM-GM	21	18	14	17	0.32	50	0.06
Deep WM	35	36	35	−3	0.32	0	1
Total	232	216	201	7	0.04	15	0.01

Note:—GM indicates gray matter; WM, white matter; DIR, double inversion recovery; FLAIR, fluid-attenuated inversion recovery; T2 TSE, T2-weighted turbo spin-echo.
* Data are numbers of detected lesions.
† Data are relative differences in the numbers of detected lesions expressed as percentages of lesion numbers identified with DIR imaging compared with the corresponding FLAIR and T2 TSE imaging.
‡ P value was obtained from the patient-wise analysis by Wilcoxon analysis for matched pairs indicating that more or fewer patients showed higher lesion load measurement with DIR imaging in comparison with the corresponding FLAIR or T2 TSE imaging.