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Stereotaxia

3DSlicer extension for computing stereotactic frame coordinates for neurosurgery planning allowing to work with stereotactic arc settings using a Micromar or Leksell Stereotactic device.

See a short demo video for Micromar Stereotectic device here. See a short demo video for Leksell Stereotectic device here.

We are currently in the process of merging two independently developed applications. Consequently, there are still numerous submodules that will be reduced over time.

Modules:

  • Stereotaxia: a module with graphics (stereotatic frame, volume, entry_point, target_point) that do registration and 3D coordinates conversion for neurosurgery planning. you can modify manually the frame parameters.
  • StereotaxiaLite: converts 2D fiducial entry and target coordinates into 3D reference on a CT volume.
  • find_zFrame_SLICERSTEREOTACTIC: Automatic detection of N-shaped markers in stereotactic CT Images. Generating the transform that will align the N-shaped markers so they "lay flat on the axial slicing plane", this has the effect of aligning the Leskell coordinate system with the coordinate system in slicer Frame Localization
  • probeView_SLICERSTEREOTACTIC: Reorienting slices in order to obtain "probeview". Probe View Converting the postion of those points to patient space or image space.
  • stereo_points_SLICERSTEREOTACTIC: Placing stereotactic points/trajectories with X, Y, Z, Ring, Arc settings. Stereotactic Trajectories

Installation

Tutorial

  • Go to StereotaxiaLite module.
  • Load CT with head frame. For testing, CTHeadFrame data set in Sample Data module can be used.
  • Click Registracion button.
  • Click on the 9 intersection points of the frame in the order shown in the image below:

  • Click Target button and then click in the image to specify the target point.
  • Click Entry button and then click in the image to specify the entry point on the skin.
  • Computed angles are displayed in Resultados section

See a short demo video for Leksell Stereotectic device here.

References

Jorge Beninca, MD; Elena Zemma, MD; Dante Lovey, MD; Lucas Vera, MD; Miguel Ibáñez, MD, "Programa para la planifcación de cirugías estereotácticas" (Software for stereotactic surgery planning), NeuroTarget - Vanguardia en Neurociencia, Vol 11, No 4., 2017 - http://neurotarget.com/numero.php?idn=30

STEREOTACTIC: This was presented as ePoster #26250 at ESSFN 2021 in Marseille (FR) https://doi.org/10.1159/000520618.

Financial Support