A Comparison of Patient-specific Delivery Quality Assurance (DQA) Devices in Radiation Therapy

• 영문명: 방사선치료에서 환자맞춤형 선량품질보증 장치의 비교
• 발행기관: 대한방사선과학회(구 대한방사선기술학회)
• 저자명: 장경환
• 간행물 정보: 『방사선기술과학』제46권 제3호, 231~238쪽, 전체 8쪽
• 주제분류: 의약학 > 방사선과학
• 파일형태: PDF
• 발행일자: 2023.06.30

영문 초록

This study aimed to compare the results of delivery quality assurance (DQA) using MapCHECK and OCTAVIUS for radiation therapy. Thirty patients who passed the DQA results were retrospectively included in this study. The point dose difference (DD) and gamma passing rate (GPR) were analyzed to evaluate the agreement between the measured and planned data for all cases, Plan complexity was evaluated to analyze dosimetric accuracy by quantifying the degree of modulation according to each plan. We analyzed the monitor units (MUs) and total MUs for each plan to evaluate the correlation between the MUs and plan complexity. We used a paired t-test to compare the DD and GPRs that were obtained using the two devices. The DDs and GPRs were within the tolerance range for all cases. The average GPRs difference between the two devices was statistically significant for the brain, and head and neck for gamma criteria of 3%/3 mm and 2%/2 mm. There was no significant correlation between the modulation index and total MUs for any of the cases. These DQA devices can be used interchangeably for routine patient-specific QA in radiation therapy.

목차

Ⅰ. Introduction

Ⅱ. Materials and methods

Ⅲ. Results

Ⅳ. Discussion

Ⅴ. Conclusion

REFERENCES

키워드

선량품질보증 MapCHECK OCTAVIUS 변조인자 방사선치료 Delivery Quality Assurance MapCHECK OCTAVIUS Modulation Index Radiation Therapy