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Efficient X-Ray Source Probe Adjustment of the Intrabeam Intraoperative Radiotherapy System.

Alberto de la Zerda1,2, Kyle R Padgett1,2, Matthew Studenski1,2

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Summary

A modified quality assurance (QA) procedure for intraoperative radiotherapy (IORT) systems like Intrabeam can improve efficiency. By ignoring manipulation artifacts during probe realignment, this method saves time for medical teams and reduces patient anesthesia duration.

Keywords:
intrabeamintraoperative radiotherapyiortkv x-raysoperating roomqaquality assurancexrs

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Area of Science:

  • Medical Physics
  • Radiation Oncology
  • Surgical Technology

Background:

  • Intraoperative radiotherapy (IORT) delivers targeted radiation during surgery, requiring rigorous quality assurance (QA) for patient safety.
  • The Intrabeam system, a common electronic brachytherapy unit, necessitates specific QA tests, including isotropy and output checks.
  • Failures in the initial isotropy test trigger a mandatory probe realignment procedure, crucial for accurate IORT delivery.

Purpose of the Study:

  • To propose a modified probe realignment procedure for the Intrabeam IORT system to enhance efficiency.
  • To address the issue of false-negative results in the current probe adjustment process.
  • To reduce delays in initiating IORT treatments and optimize operating room workflow.

Main Methods:

  • A modified probe realignment procedure was developed, focusing on disregarding measurement artifacts caused by user manipulation.
  • The revised method prioritizes artifact-free misalignment readings obtained when the QA device is stable.
  • This modification aims to improve efficiency without altering system tolerances or QA acceptance criteria.

Main Results:

  • The proposed modification is expected to reduce false-negative results in probe realignment, thereby minimizing treatment delays.
  • By filtering out manipulation artifacts, the procedure becomes more reliable and efficient.
  • The enhanced QA process can lead to significant time savings for surgical teams.

Conclusions:

  • Implementing the modified probe realignment procedure can streamline the QA process for Intrabeam IORT.
  • Increased efficiency in QA testing can reduce overall treatment time and patient exposure to anesthesia.
  • This workflow-based improvement supports timely and effective delivery of intraoperative radiotherapy.