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Invasive frame-based: targeting
6
l
Originally defined by invasive head frame
g
Golden standard
l
Origin coordinates = center of head frame
l
Accurate determination of stereotactic
coordinates of a target point
g
Usually center of the target volume
Figure 1: The invasive head frame fixation (frame-based) (left) and the mask
immobilization (frameless approach) (right)
Finally, even with the technological advancements that enable a good dosimetrical