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Experience in commissioning the halcyon linac.

Tucker Netherton1, Yuting Li1, Song Gao1

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|July 17, 2019
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Commissioning the Halcyon linear accelerator showed good agreement between vendor data and independent measurements. Data validation may be more efficient than full commissioning for this new platform.

Keywords:
HalcyonTPS verificationbeam data verificationcommissioning

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Area of Science:

  • Medical Physics
  • Radiation Oncology

Background:

  • The Halcyon platform represents a new generation of medical linear accelerators.
  • Commissioning new radiotherapy equipment is crucial for ensuring accurate and safe patient treatments.

Purpose of the Study:

  • To validate pre-defined beam data for the Halcyon platform.
  • To compare independent commissioning data from two institutions.
  • To identify differences in commissioning compared to traditional C-arm linear accelerators.

Main Methods:

  • Independent beam measurements and system testing (MLC, imaging, mechanical) at two institutions.
  • Comparison of acquired data with published recommendations and vendor documentation.
  • Evaluation of adapted practices for the new system's unique design.

Main Results:

  • Good agreement between experimental data, treatment planning system calculations, and independent institutional measurements.
  • Unique characteristics of the Halcyon's MLC, MV imaging, and mechanical systems identified.
  • Adaptation of existing and development of new commissioning methods were necessary.

Conclusions:

  • Vendor-provided data for the Halcyon platform align well with independent measurements.
  • Data validation may offer a more efficient commissioning approach than full data commissioning.
  • The study provides valuable reference data for future Halcyon users.