| 杨瑞杰,王俊杰,许峰,张喜乐.电子射野影像系统用于调强放疗剂量验证[J].中华放射医学与防护杂志,2013,33(1):55-57 |
| 电子射野影像系统用于调强放疗剂量验证 |
| The electronic portal imaging device for dosimetric verification of intensity-modulated radiation therapy |
| 投稿时间：2012-08-16 |
| DOI：10.3760/cma.j.issn.0254-5098.2013.01.014 |
| 中文关键词: 电子射野影像系统 调强放疗 剂量验证 |
| 英文关键词:Electronic portal imaging device Intensity-modulated radiation therapy Dosimetric verification |
| 基金项目:国家自然科学基金(81071237) |
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| 中文摘要: |
| 目的 探讨电子射野影像系统(aS1000)用于调强放疗剂量验证的可行性和效率。方法 分别使用美国Varian公司生产的Trilogy直线加速器的aS1000电子射野影像系统和瑞典IBA公司的二维空气电离室矩阵MatriXX及其配套的Multicube模体对10例接受调强放疗的患者进行剂量验证,记录和比较两种方法验证的γ通过率和时间。结果 采用3%和3 mm的标准,aS1000和MatriXX验证的γ通过率分别为95.82%和99.08%,平均时间为12.7和47.8 min。结论 aS1000电子射野影像系统可以作为患者调强放疗的剂量验证工具,比MatriXX更方便快捷。 |
| 英文摘要: |
| Objective To investigate the feasibility and efficiency of electronic portal imaging device for dosimetric verification of intensity-modulated radiation therapy.Methods 10 patients treated with intensity-modulated radiation therapy were verified using the electronic portal imaging device of aS1000 from Varian and MatriXX from IBA. The gamma pass rate and time needed was recorded and compared. Results The gamma pass rate at 3%/3 mm was 95.82% (94.77% -96.86%) and 99.08% (98.72% -99.45%) with aS1000 and MatriXX, respectively. The average time needed for dosimetric verification with aS1000 and MatriXX was 12.7 and 47.8 min, respectively. Conclusions The electronic portal imaging device of aS1000 has the potential as a tool for IMRT dosimetric verification. It is more convenient and efficient than MatriXX. |
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