Cranial Navigation System Registration

Satura rādītājs

Landmark Introduction

Background

Landmark registration uses a paired point matching technique to correlate the image set to the actual patient anatomy.

Registration points allowed are:

  • Multi-Modality Donut Registration Markers worn by the patient during scanning
  • Anatomical landmarks
  • Screws
Registration points can be planned in:

  • iPlan
  • Registration

Before You Begin

Do not remove markers from the patient’s skin until patient registration has been performed. Otherwise, these markers cannot be used for Landmark registration.

Placing Multi-Modality Donut Registration Markers



At least four landmarks are required for registration. It is recommended to attach six or seven markers to the patient to ensure a sufficient number of landmarks in case markers fall off.

To achieve optimal registration of fiducial markers or landmarks:

  • Position the fiducial markers/landmarks around the head, as randomly and far apart as possible. Avoid placing fiducial markers/landmarks in a symmetric structure (e.g., in a row or regular shape).
  • The fiducial marker/landmark positions should surround the region of interest.
  • Avoid areas with loose skin.

Registration Methods

When registering markers and pre-planned landmarks, hold the tip perpendicular to the marker/landmark. This prevents inadvertent skin shifting caused by the force of the instrument.

Method Explanation
Multi-Modality Donut Registration Markers
  • Softouch: Place the tip in the inner opening of the marker, making sure the tip touches the skin.
  • Brainlab Pointer, Blunt Tip: Place the tip in the center of the marker and slowly pivot while keeping the tip in place.
Anatomical Landmarks
  • Softouch: Place the tip on the landmark, making sure the tip touches the skin.
  • Brainlab Pointer, Blunt Tip: Place the tip on the landmark and slowly pivot while keeping the tip in place.
Screws Softouch or Brainlab Pointer, Blunt Tip: Place the tip on the center of the screw and slowly pivot while keeping the tip in place.
Art-No. 60917-77EN

Publicēšanas datums: 2018-09-05