Brainlab VectorVision, Руководство пользователя системы

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System User Guide Rev. 1.6 VectorVision 83
OPERATING TOUCHSCREEN & CAMERA
6.3.2 Camera Field of View
About the Camera
Field of View Position the camera so that it is centered on the camera field of view. Optimal working distance is
1.2 to 1.8 m from the camera to the operating field.
If instruments are not in camera field of view, they cannot be tracked.
The navigation software camera displays and the camera field of view dialog (see
Software User
Guide
) help you to determine the best camera position.
Figure 41
Ensuring Accuracy
Measurement precision in a plane perpendicular to viewing direction of camera is
higher than precision along the direction of camera view. Take this into account when
positioning the patient.
To ensure optimum accuracy, the tracking sensor requires a warm-up period at room
temperature of approximately 20 minutes.
Ensure that all highly reflective items or sources of light do not obstruct the camera’s
view. Artifacts caused by reflections can reduce accuracy, especially during registra-
tion.