Mean diffusivity (<D>) and proton longitudinal relaxation time (T1) measured in various brain regions for 10 female patients with idiopathic intracranial hypertension and 10 age, sex, and weight matched controls
| <D> (×10−6 mm2/s) | T1 (ms) | |||||||
|---|---|---|---|---|---|---|---|---|
| Brain region | Patient | Control | p Value | Published valuesa | Patient | Control | p Value | Published valuesc |
| Values are mean (SD). | ||||||||
| aValues <D> reported by Ulug and van Zijl in five normal volunteers.13 | ||||||||
| bValues of <D> reported by Pierpaoli et al in eight normal volunteers.14 | ||||||||
| cValues of T1 reported by Kingsley et al in three normal volunteers at 1.5 T.10 | ||||||||
| Grey matter | ||||||||
| Cortical grey matter | 842 (124) | 816 (92) | 0.28 | 930 (20) | 1024 (146) | 1070 (221) | 0.27 | 1113 (48) |
| Thalamus | 738 (30) | 719 (38) | 0.20 | 730 (50) | 852 (60) | 835 (44) | 0.29 | 814 (26) |
| Caudate (head) | 764 (34) | 771 (45) | 0.62 | 680 (70) | 1075 (71) | 1103 (73) | 0.23 | 1033 (41) |
| Putamen | 727 (30) | 708 (38) | 0.20 | 720 (90) | 1059 (96) | 1040 (80) | 0.49 | 919 (42) |
| White matter | ||||||||
| Corpus callosum | 818 (85) | 824 (102) | 0.84 | 815 (117) | 880 (179) | 812 (120) | 0.16 | 756 (81) |
| Internal capsule | 772 (65) | 762 (33) | 0.51 | 690 (30) | 834 (133) | 848 (94) | 0.71 | – |
| Subcortical WM | 720 (44) | 726 (52) | 0.58 | 770 (30) | 748 (72) | 733 (43) | 0.27 | 642 (21) |
| Centrum semiovale | 678 (52) | 662 (65) | 0.42 | (648 (24))b | 729 (46) | 742 (30) | 0.31 | – |