IMRT

Image-guided stereotactic radiotherapy

Replacement of the stereotactic system of external coordinates for patient positioning by imaging = Frameless

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 plan with sub-millimetric positioning of the target and immobilization of the patient, some uncertainties in target localization and positioning are still present and must be taken into account during a SRS treatment (9). Stereotactic

Imaging

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