(1) Select how to classify a herniation:
• 2 levels – mild, severe
• 3 levels – mild, moderate, severe

(2) Select the boundaries between the different levels of herniation (in millimeters)

(3) Select the limits for reporting the position of the herniation (as a percentage of the
size of the canal)

(4) Select a lower limit above which compression of a dural sac will be reported

(5) Select a minimum value for reporting cranial migration (in millimeters)

(6) Select a minimum value for reporting caudal migration (in millimeters)

(7) Select a probability percentage of having a herniation above which it should be reported as present. *

* Based on various measurements, CoLumbo’s algorithm calculates the probability of a pathology being present. The user can change the probability percentage above which a herniation or bulging will be reported as present. For example, if the algorithm calculates a measurement above the norm and determines a 40% probability of a herniation, if the user has set a minimum of 50% – CoLumbo will not report the presence of a herniation, but only an abnormal measurement. The minimum is 1% and the maximum is 99%.