动态成像技术及其在精确放疗中的应用

杨克柽; 孙卫国; 林意群

动态成像技术及其在精确放疗中的应用

杨克柽 , 孙卫国 , 林意群

文章导航 > 国际放射医学核医学杂志 > 2005, 29 > 3: (136-139)

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动态成像技术及其在精确放疗中的应用

510515 广州, 南方医科大学生物医学工程系医学仪器教研室
中图分类号: R814.42

Dynamic imaging technique and its application in precise simulation of radiotherapy

Department of Medical Instrument, Biomedical Engineering Faculty, Nanfang Medical University, Guangzhou 510515, China
CLC number: R814.42

摘要: 放射治疗的发展与现代医学影像技术密不可分,CT成像的空间分辨力和时间分辨力的提高使得动态CT日益成为临床应用的有效手段。在放疗模拟定位的应用中,采用呼吸门控技术得到呼吸周期中不同相位的三维图像,可掌握肿瘤目标随呼吸的运动变化规律,从而建立精确的数学模型,对改进治疗计划具有重要意义。此外,在直线加速器上嵌入两正交的X射线成像系统,以实时跟踪肿瘤目标的位置,也是四维放疗研究的一个方向。
- 动态成像 /
- CT /
- 放疗 /
- 模拟定位
Abstract: The development of radiotherapy is closely linked with modern medical imaging technique. 4-dimensional CT increasingly becomes an effective measure due to the improvement of temporal and space resolution of CT imaging. In the simulation of radiotherapy, 3-dimension images in different phases can be collected with respiration-gating technique. Therefore, a precise mathematical model is set up after the rule of tumor motion along with respiration is found out, which is significant for the improvement of treatment planning. Moreover, two orthogonal X-ray imaging systems mounted on the gantry of a medical linear accel-erator for tracking the real position of tumor is also an interesting aspect in 4-dimensional radiotherapy study.
- 4-dimensional imaging /
- computed tomography /
- radiotherapy /
- simulation
本作品遵循Signature-Non-Commercial Use 4.0 International (CC BY-NC 4.0)协议

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动态成像技术及其在精确放疗中的应用

510515 广州, 南方医科大学生物医学工程系医学仪器教研室

收稿日期: 2004-09-22

关键词:

动态成像 /
CT /
放疗 /
模拟定位

摘要: 放射治疗的发展与现代医学影像技术密不可分,CT成像的空间分辨力和时间分辨力的提高使得动态CT日益成为临床应用的有效手段。在放疗模拟定位的应用中,采用呼吸门控技术得到呼吸周期中不同相位的三维图像,可掌握肿瘤目标随呼吸的运动变化规律,从而建立精确的数学模型,对改进治疗计划具有重要意义。此外,在直线加速器上嵌入两正交的X射线成像系统,以实时跟踪肿瘤目标的位置,也是四维放疗研究的一个方向。