Article Figures & Data
Figures
- FIG 1.
How to measure the ONSD and perioptic subarachnoid space. Illustration (A) depicting the measurements for the ONSD and the perioptic subarachnoid space. Pre- (B) and post- (C) operative coronal fat-suppressed T2-weighted MR imaging shows restoration of the perioptic subarachnoid space (arrows) following ligation of a spinal CSF-venous fistula.
- FIG 2.
ONSD and perioptic subarachnoid space measurements in patients with and without spinal CSF-venous fistulas. Box and whisker plots of the ONSD and perioptic SAS in patients without and with a spinal CSF-venous fistula. The box represents the upper and lower quartiles with the line splitting the box representing the median. The diamond represents the mean. The whiskers represent the upper and lower values of the data, up to 1.5 times the interquartile range. The single points represent the outliers.
- FIG 3.
Predicted probability of finding a spinal CSF-venous fistula based on the ONSD and perioptic subarachnoid space measurements. The graphs depict the predicted probability (and 80% confidence intervals) of identifying a CSF-venous fistula according to ONSD and perioptic SAS.
- FIG 4.
The relationship among the BMI, CSF opening pressure, ONSD, and perioptic subarachnoid space. Scatterplots depict the relationships among BMI, CSF OP (in centimeters CSF), ONSD, and the perioptic SAS. By ranking from the weakest to the strongest correlation, positive correlations are found between the ONSD and OP, BMI and OP, perioptic SAS and OP, and ONSD and perioptic SAS.
- FIG 5.
Normalization of the ONSD and perioptic subarachnoid space following ligation of spinal CSF-venous fistulas. Individual measurements of the pre- and postoperative ONSD and perioptic SAS following ligation of the spinal CSF-venous fistula.
