2017_SBRT_Course Book

Is the skull a suitable reference? • If visualization of the target is not possible, one has to use the bony skull as a surrogate for the actual intra- cranial target in IGRT • However, internal „motion of intra-cerebral tumor could be caused by: Ø Tumor progression Ø Tumor shrinkage Ø Changes of peritumoral oedema Ø This is the same for invasive frame-based techniques

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SBRT 2017 - D. Verellen