N.B. software always will label one worst fiducial as but that doesn’t mean it is “Marginal” bad per se. Goal of navigation accuracy is 0.2 mm (acceptable minimum 0.5 mm) ≤ Next to accuracy (on registration series) by operator touching several fiducials. → “Step” Go to appropriate plan, turn all scans off, check geometry on toolkit (after it gets close to target; may loosen screw and rotate NexProbe if geometry is unacceptable) brain pushes hardware posteriorly and medially so cheat (if unable to perfectly align to target) laterally and anteriorly (unless expect to use posterior track) After hardware secured to target Next Click entry” → → “Set Next check distance to target (length of trajectory) set Nexdrive Z-stage to that distance: → – Go to 10”: operator points to A step operator points to E step target”; “Plan → → “Set → →“Set check on axial window (turn crosspin on with F4) deviation from midline operator adjusts by rotating → dial. Go to Plan: Planning: turn on MRI and SW move 6 mm (for VIM) or 10 mm (for STN, GPi) → above target on trajectory. [If don’t hear beep when clicking means it is on update” (vs. switch update”)] “step” – “continuous “foot [If you don’t see study image once you turned it on might be out of window; H: click or to get – “<” “>” back on trajectory] After CT is done, create plan for each microelectrode (e.g. Plan 10 rename to ctr”; Plan 9 rename → “R → to post”) check how they look on CUBE FLAIR. “R – Specificities for FrameLink – Standard mode for registration. – High-definition mode to analyze position of inserted ME or DBS – Enhanced mode at the end (to look for – - automatic fiducial-less registration O-arm gantry cannot be tilted more than 15 degrees (in general, keep as vertical as can unless need to tilt). O-arm won’t let to scan if Stealth camera cannot see passive spinal frame (can leave even unattached to patient but within camera range).
N.B. software always will label one worst fiducial as “Marginal” but that doesn’t mean it is bad per se. Goal of navigation accuracy is ≤ 0.2 mm (acceptable minimum 0.5 mm) Next → “Step” to accuracy (on registration series) by operator touching several fiducials. Go to appropriate plan, turn all scans off, check geometry on toolkit (after it gets close to target; may loosen screw and rotate NexProbe if geometry is unacceptable) brain pushes hardware posteriorly and medially so cheat (if unable to perfectly align to target) laterally and anteriorly (unless expect to use posterior track) After hardware secured to target → Next → Click “Set entry” Next → check distance to target (length of trajectory) – set Nexdrive Z-stage to that distance: Go to “Plan 10”: operator points to A → step → “Set operator points to E → step →“Set target”; check on axial window (turn crosspin on with F4) deviation from midline → operator adjusts by rotating dial. Go to Plan: Planning: turn on MRI and SW → move 6 mm (for VIM) or 10 mm (for STN, GPi) above target on trajectory. [If don’t hear beep when clicking “step” – means it is on “continuous update” (vs. “foot switch update”)] [If you don’t see study image once you turned it on – might be out of window; H: click “<” or “>” to get back on trajectory] After CT is done, create plan for each microelectrode (e.g. Plan 10 → rename to “R ctr”; Plan 9 → rename to “R post”) – check how they look on CUBE FLAIR. Specificities for FrameLink – Standard mode – for registration. High-definition mode – to analyze position of inserted ME or DBS Enhanced mode – at the end (to look for - automatic fiducial-less registration O-arm gantry cannot be tilted more than 15 degrees (in general, keep as vertical as can unless need to tilt). O-arm won’t let to scan if Stealth camera cannot see passive spinal frame (can leave even unattached to patient but within camera range).
Op360.%20DBS.docx