Spine SBRT without immobilization: detailed analysis of intra-fraction motion using high frequency kV imaging during irradiation.

Isabel F Remmerts de Vries,Wilko Far Verbakel,Marrit Adema,Ben J Slotman,Max Dahele

International journal of radiation oncology, biology, physics（2023）

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摘要

Spine tracking during irradiation can be used to prompt an intervention CBCT scan and repositioning, so that a spine SBRT target deviates by ≤1mm from the planned position, even in non-immobilized patients. kV tracking and CBCT are in good agreement. The data support verification CBCT after all 6 degrees-of-freedom positional corrections in non-immobilized spine SBRT patients.

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