Fig. 2.
T1-weighted with contrast cMRI scans of the preoperative trajectory planning for an STS in a patient with aqueductal stenosis due to an arachnoid web vie a left frontal trajectory (sagittal and coronal, A and B). Postoperative cCT with the internal shunt catheter tip in the prepontine cistern (sagittal and coronal, C and D).
