Imaging; Imaging With The Headring And Mask System; Localizer Design - Brainlab RT/RS Hardware User's Manual

IMAGING

4 IMAGING
4.1

Imaging with the Headring and Mask System

4.1.1

Localizer Design

Overview
A localizer is mounted to the headring or the mask system for imaging. The localizer's 210 mm
scanning range allows the entire head to be scanned and localized, which is especially important
for inferior lesions.
The localizer is intended for CT scanning and/or x-ray imaging. It defines a precise, stereotactic,
three-dimensional coordinate array within a patient's cranial volume (necessary for precise
radiosurgery or stereotactic biopsy procedures).
Types of Localizers
Depending on the type of headring and mask system used, there are two localizers available.
These localizers differ only in their fixing mechanism (i.e., ball feet or alignment pins).
• CT/X-Ray Localizer
• CT/X-Ray Localizer for Leksell Headring
Localizer Design
No.
Hardware User Guide Rev. 4.9 RT / RS Stereotactic Hardware
①
②
Component
①
PVC localizer rod
②
Copper square in x-ray inserts
Figure 40
④
③
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