Experience on Patient-Specific Quality Assurance for Online Adaptive Prostate SBRT

The online adaptive radiotherapy (oART) technique described in this study is technically feasible with a C-arm linac. To our knowledge, this is the first clinical experience with oART for prostate cancer including full replanning and delivered with a C-arm linac without artificial intelligence capability. Mobius3D can be effectively be used for independent pre-treatment verifications of online adaptive prostate SBRT plans. All online adaptive plans analyzed in this study passed the pre-treatment patient specific QA (PSQA) procedure when a specific DLGc value was used. The whole treatment planning and pre-treatment PSQA are performed in our department only by skilled dosimetrists. 

Learner Outcomes:

  1. Discuss the feasibility of performing online adaptive SBRT for prostate cancer with a standard linac
  2. Explain why Mobius3D is a key tool for pre-treatment verification of the generated adapted plan
  3. Outline the improved results are obtained with a sDLGc
  4. Justify that a trained dosimetrist can lead the online adaptive workflow

CE Credit = 0.5

Coral Laosa Bello

Radiation Therapist/Dosimetrist

Hospital Quirónsalud Barcelona

Coral Laosa Bello is a radiotherapy technologist in the Radiation Oncology Department at Hospital Quirónsalud Barcelona. Coral currently works as a clinical dosimetrist, especially for online adaptive radiotherapy and cranial stereotactic radiosurgery.

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