Table 1 Grading system for catheter tip location [5]
Grade | Accuracy of placement | Location of catheter tip |
|---|---|---|
1 | Optimal/adequate | Ipsilateral frontal horn, including tip of third ventricle |
2 | Suboptimal (shallow) in noneloquent tissue | Contralateral frontal horn or lateral ventricle/corpus callosum/interhemispheric fissure |
3 | Suboptimal in eloquent tissue | Brainstem/cerebellum/internal capsule/basal ganglia/thalamus/occipital cortex/basal cisterns |