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Introduction to Surface Matching Registration
Introduction to Surface Matching Registration
About Surface Matching Registration
Overview
With surface matching registration, you scan anatomically important surfaces of the pa-
tient's head using
The software uses a surface matching algorithm to match the patient's anatomy to the pre-
operative CT/MR images. Only anatomical surface points included in the CT/MR image
sets can be acquired and used for the surface matching algorithm.
Before You Begin
Advantages
• Skin shift is reduced (when using
• CT/MR (fiducial) markers are not required
NOTE: The pointer can also be used for surface matching registration, however for best
results, we recommend using the z-touch or Softouch .
Surface Matching
Methods
80
z-touch
Make sure that the patient's anatomy has not changed from the scan. This
would result in incorrect registration and navigation.
Verify that the registration device (
Method
Description
z-touch
z-touch
era. You acquire points by scanning the patient's head.
Softouch
Softouch
infrared signal emitted from
ter the point the moment the pointer touches the skin.
You can use
tion with each other. This is useful if characteristic surface match-
ing points are not accessible with
Combining
covered by hair or locations where the infrared laser point cannot be
z-touch
and
detected by the camera).
Softouch
You can switch between registration modes by pressing either
z-touch
or
.
Softouch
/
z-touch
Softouch
z-touch
or
Softouch
emits an infrared laser beam which is detected by the cam-
is an electronic pointer with a skin detection sensor. An
Softouch
z-touch
and
Softouch
or
Softouch
in the
Patient Registration
Software User Guide Rev. 1.0 Kolibri cranial/ENT Ver. 2.7
) is functioning properly.
)
triggers the camera to regis-
point acquisition in combina-
(e.g., required areas are
z-touch
dialog.
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