一个比较的,多观察者分析的节点轮方法在盆腔在线梁基于自适应性辐射疗法
Ethan Wang1, Michael Dohopolski1, Allen Yen1
1Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, Texas.
刚性传播比人工智能引导的变形更准确,用于形束计算断层学基于适应性辐射疗法的节点自分化. 这一发现有助于提高盆腔辐射治疗的轮精度.
科学领域:
- 医学物理 医学物理
- 辐射瘤学 辐射瘤学
- 医疗成像医学成像
背景情况:
- 基于线上圆束计算断层扫描 (CBCT) 的自适应性辐射疗法 (ART) 需要精确的节点重构来解释解剖变化.
- 由于ART的小目标尺寸和时间限制,节点重塑具有挑战性.
- 自动细分方法旨在提高这一过程的效率和准确性.
研究的目的:
- 为了评估刚性传播与人工智能引导变形 (AID) 的准确性,用于节点自分化.
- 为了比较自细分精度与基准轮划定无限时间.
- 评估自细分对盆腔ART剂量覆盖的影响.
主要方法:
- 分析了25个节点结构,来自16名接受骨盆在线CBCT的患者.
- 将刚性传播和AID生成的轮与两个基准轮和临床轮进行比较.
- 计算子相似系数 (DSC),假正负子和95%的豪斯多夫距离 (HD95).
- 评估失效率和剂量指标 (D100,D95,V100,V95) 的评估.
主要成果:
- 刚性传播实现了0.68的DSC中位数与基准轮相比,而AID实现了0.58.
- 观察到错误阴性子的显著差异,有利于对艾滋病的刚性传播.
- 刚性传播的失败率为20%,AID为48%,临床轮为28%.
- 在轮类型之间没有发现剂量指标的显著差异.
结论:
- 与AID相比,刚性传播在基于骨盆CBCT的ART中表现为初始节点自分化的优越性能.
- 改善轮时间和图像质量可能会提高准确性并减少变化.
- 个人轮偏好可以影响最终的细分质量.
更多相关视频
07:57Positron Emission Tomography-based Dose Painting Radiation Therapy in a Glioblastoma Rat Model using the Small Animal Radiation Research Platform
Published on: March 24, 2022
08:34Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies
Published on: February 6, 2019
相关概念视频
08:17Dynamic Lung Tumor Tracking for Stereotactic Ablative Body Radiation Therapy
07:57Positron Emission Tomography-based Dose Painting Radiation Therapy in a Glioblastoma Rat Model using the Small Animal Radiation Research Platform
Nodal Analysis
Consider, for instance, a simple circuit composed of three nodes and three resistors, as shown in...
08:34Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies
05:49Reliability of Artificial Intelligence-Based Cone Beam Computed Tomography Integration with Digital Dental Images
06:18The Collective Trust Game: An Online Group Adaptation of the Trust Game Based on the HoneyComb Paradigm
