Software User Guide Rev. 1.0 Kolibri cranial/ENT Ver. 2.7 87
Surface Matching Registration
Important Tips for
Scanning
• Do not use areas which may change depending on patient position, or when the patient
is relaxed.
• Scan areas where skin is clearly visible. If necessary, shave areas covered with hair.
• If skin surface does not sufficiently reflect the light, moisturize it.
• Scan both sides of the patient’s face.
• If necessary, adjust the camera during z-touch registration.
How to Optimize
Registration
Accuracy
1. Acquire more than just one circle using the laser (e.g., around one eye).
Why? A circle fits anywhere on a spherical shape, like the human head.
2. If there is limited access to the entire face, use the pointer to acquire points on sur-
faces not visible to the camera.
Why? Points are necessary from as many significant skin shapes as possible. Although
it is not as efficient as when using the
z-touch, the pointer helps acquire points from
hidden surfaces.
3. Always include the entire nose in point acquisition.
Why? The more unique a shape is, the more easily the patient scan and the actual
patient’s anatomy can be matched. The bridge of the nose is not deformed by intubation
or tape and therefore retains its unique shape.
4. For parietal or occipital access, acquire additional points from the parietal or
occipital area using the pointer.
Why? The surface matching on the face generally results in very high accuracy in the
frontal part of the skull. However, the further away the face is, the higher the deviation
due to the distance between the face and the back of the head. Additional points from
the back of the head will reduce this deviation.
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