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