Research Article
An Objective Study of Anatomic Shifts in Intracranial Hypotension Using Four Anatomic Planes
Table 3
Suggested cutoff distances for the proposed grades.
| Variable | Suggested cutoff values |
| Distance from mammillary body tip to incisura line | | Distance from the diaphragm sella to the optic chiasm | | Angle of the optic chiasm | 1.7 | Height of the interpeduncular cistern at the plane of the cecum | | Mammillopontine distance | | Ratio of interpeduncular cistern | | Distance from iter to tuberculum-venous confluence line | ā1.15 | Distance from splenium of the corpus callosum to the incisura line | | Distance from caudal pole of tonsils to plane of the foramen magnum | ā0.1 | Distance from obex to plane of foramen magnum | |
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All suggested values are in mm except for those denoted by which are in degrees. |