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[Study on Automatic Plan Method for Radiotherapy after Breast-conserving Surgery Based on TiGRT System].

Chuanbin Xie1,2, Xiangkun Dai1, Hongfeng Shen1

  • 1Department of Radiotherapy, the First Medical Center of Chinese PLA General Hospital, Beijing, 100853.

Zhongguo Yi Liao Qi Xie Za Zhi = Chinese Journal of Medical Instrumentation
|February 12, 2022
PubMed
Summary
This summary is machine-generated.

Automatic planning (AP) using the TiGRT system for radiotherapy after breast-conserving surgery shows comparable target dose coverage to manual planning (MP). AP reduces lung dose while maintaining plan quality, offering a viable automated solution.

Keywords:
automatic plan methodbreast cancerdosimetryevaluation of radiotherapy plansradiotherapy after breast-conserving surgery

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Area of Science:

  • Radiation Oncology
  • Medical Physics
  • Surgical Oncology

Background:

  • Breast-conserving surgery (BCS) is a standard treatment for breast cancer.
  • Radiotherapy is often administered post-BCS to reduce local recurrence.
  • Manual treatment planning is time-consuming and can be subject to inter-observer variability.

Purpose of the Study:

  • To evaluate an automatic planning (AP) method for post-BCS radiotherapy using the TiGRT system.
  • To compare the dosimetry and quality of AP with traditional manual planning (MP).

Main Methods:

  • A retrospective analysis of 10 patients undergoing post-BCS radiotherapy.
  • Dosimetric parameters were compared between AP and MP using the TiGRT system.
  • Evaluation included target dose coverage, organ-at-risk sparing, and plan quality scores.

Main Results:

  • AP demonstrated comparable target dose coverage to MP, with no significant difference except for Conformity Index (CI).
  • AP significantly reduced V5, V20, and V30 for both affected and whole lungs compared to MP.
  • AP resulted in a 16.1% increase in Monitor Units (MU) and a 6.1% improvement in evaluation scores.

Conclusions:

  • The TiGRT-based AP method is a viable, automated approach for post-BCS radiotherapy planning.
  • AP ensures plan quality while offering potential improvements in normal tissue sparing.
  • Automation of radiotherapy planning can streamline workflows and maintain high-quality treatment delivery.