Table 1:

MR imaging features and IDH-mutation and 1p/19q codeletion status

	IDH Wild- Type	IDH-Mutant	P	IDH-Mutant, Non-1p/19q Codeleted	IDH-Mutant, 1p/19q Codeleted	P
MR imaging features (No.) (%)
T2 signal intensities^{^a}
>Gray matter	13 (22.4%)	30 (43.5%)	.012^{^c}	21 (48.8%)	9 (34.6%)	.248
>Mixed	45 (77.6%)	39 (56.5%)	.012^{^c}	22 (51.2%)	17 (65.4%)	.248
T2 homogeneity^{^a}
Homogeneous	6 (10.3%)	14 (20.3%)	.125	10 (23.3%)	4 (15.4%)	.544
Heterogeneous	52 (89.7%)	55 (79.7%)	.125	33 (76.7%)	22 (84.6%)	.544
Margin
Well-defined	32 (54.2%)	27 (38.0%)	.065	20 (44.4%)	7 (26.9%)	.143
Mixed	27 (45.8%)	44 (62.0%)	.065	25 (55.6%)	19 (73.1%)	.143
Edema
No-to-minimal	20 (33.9%)	57 (79.2%)	<.001^{^c}	38 (82.6%)	19 (73.1%)	.339
Mild-to-marked	39 (66.1%)	15 (20.8%)	<.001^{^c}	8 (17.4%)	7 (26.9%)	.339
Enhancing pattern^{^b}
None/minimally enhancing	4 (7.0%)	30 (42.3%)	<.001^{^c}	19 (41.3%)	11 (44.0%)	.826
Enhancing	55 (93.2%)	41 (56.9%)	<.001^{^c}	27 (58.7%)	14 (56.0%)	.826
Proportion of enhancing area^{^b}
<50%	14 (23.7%)	63 (88.7%)	<.001^{^c}	40 (87.0%)	23 (92.0%)	.704
≥50%	45 (76.3%)	8 (11.3%)	<.001^{^c}	6 (13.0%)	2 (8.0%)	.704
Cystic area
Presence	5 (8.5%)	28 (39.4%)	.013^{^c}	26 (56.5%)	17 (65.4%)	.461
Absence	54 (91.5%)	43 (59.7%)	.013^{^c}	20 (43.5%)	9 (34.6%)	.461
Necrotic area^{^b}
Presence	49 (83.1%)	16 (22.5%)	<.001^{^c}	38 (82.6%)	17 (68.0%)	.159
Absence	10 (16.9%)	55 (77.5%)	<.001^{^c}	8 (17.4%)	8 (32.0%)	.159
rADC_mean (median)	1.1	1.6	<.001^{^c}	1.7	1.5	.071
rADC_min (median)	0.9	1.4	<.001^{^c}	1.4	1.3	.178
rADC_max (median)	1.3	1.8	<.001^{^c}	1.9	1.7	.106