相关实验视频

Updated: May 1, 2026

Dynamic Lung Tumor Tracking for Stereotactic Ablative Body Radiation Therapy

Dynamic Lung Tumor Tracking for Stereotactic Ablative Body Radiation Therapy

Published on: June 7, 2015

评估适应性放射治疗的CBCT校正算法

Caleb Sawyer^1,2, Jihye Koo², Arash Naghavi²

¹University of South Florida, Tampa, USA.

Technology in cancer research & treatment

|February 27, 2026

概括

一个新的形束计算断层扫描 (CBCT) 校正算法显示了适应性放射治疗 (ART) 的前景. 这种方法可以通过每日CBCT扫描更快地进行治疗规划,而不会影响剂量的准确性.

科学领域:

医学物理医学物理
放射治疗技术放射治疗技术
图像处理图像处理

背景情况:

适应性放射治疗 (ART) 旨在提高治疗效率.
每日形束计算断层扫描 (CBCT) 越来越多地用于放射治疗.
准确的图像数据对于有效的适应性规划至关重要.

研究的目的:

评估使用CBCT校正算法用于日常治疗计划的可行性.
评估CBCT校正对ART中剂量计算准确性的影响.
要确定算法是否可以减少重新模拟的需要.

主要方法:

一个CBCT校正算法应用于幻影和患者数据.
处理CBCT图像以减少文物,并计划匹配CT强度.
在CT上生成的治疗计划在更正的CBCT上重新计算.
用3%/2毫米的马分析分析了剂量差异.

主要成果:

CBCT校正算法在肺幻影上产生了高剂量一致.
所有14个患者计划 (头,瘤) 在校正后都实现了>95%的马通过率.
该算法有效地生成了纠正的CBCT用于治疗规划.

结论:

CBCT校正算法显示了更快的线下自适应规划的潜力.
这种方法可以减少重复CT扫描 (重复模拟) 的需要.
通过使用修正的CBCT数据来保持剂量计算的准确性.

关键词:

在CBCT中进行校正.在CBCT质量方面.适应性规划适应性规划适应性辐射疗法 (ART)头部和部的规划 (H&N规划)肉瘤规划计划中的肉瘤

更多相关视频

Treatment of Liver Metastases Using an Internal Target Volume Method for Stereotactic Body Radiotherapy

Treatment of Liver Metastases Using an Internal Target Volume Method for Stereotactic Body Radiotherapy

Published on: May 8, 2018

Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies

Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies

Published on: February 6, 2019

相关概念视频

Computed Tomography

Computed Tomography

Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...