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Tumor tracking: Cyberknife

Advantages

:

Ø

High dynamic and geometric

accuracy

Ø

Markerless tracking available for

specific cases

Drawbacks

:

Ø

Small circular field sizes

(new version comes with MLC)

Ø

Long treatment times

Ø

Posterior beams not possible

Ø

Volumetric imaging not supported

Ø

Direct verification of beam not

supported.

-Light and compact linac ( < 300kg )

-Mounted on a robot

SBRT 2017 - D. Verellen