SBRT2015

Tumor tracking: couch compensation

Dynamic couch compensation “Keeping the tumor position fixed in space by counteracting motions of the treatment couch and irradiate with a static beam” • Advantages : ! Free breathing ! Linac can operate as in a static situation ! Using a “work horse” linac • Drawbacks : ! Discomfort patient? Relaxing? ! Impact on tumor motion, patient positioning? ! Changing position of beam with respect to patient anatomy

Linac

Courtesy O. Haas

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SBRT 2015 - D. Verellen