基于深度学习的剂量转换模型在质子束疗法中的通用性
Ryohei Kato1,2, Noriyuki Kadoya2, Takahiro Kato3
1Department of Radiation Physics and Technology, Southern Tohoku Proton Therapy Center, Koriyama, Fukushima, Japan.
Journal of applied clinical medical physics
|February 27, 2026
概括
深度学习模型可以准确地将质子束疗法 (PBT) 剂量转换为相当于蒙特卡洛 (MC) 的剂量,从而改善各种瘤部位的治疗规划速度和准确性.
科学领域:
- 医学物理 医学物理
- 辐射疗法 辐射疗法
- 计算生物学 计算生物学
背景情况:
- 质子束疗法 (PBT) 在具有分析笔束 (PB) 算法的不均区域中面临剂量不确定性.
- 准确的蒙特卡罗 (MC) 剂量计算是耗时的,在速度和精度之间产生了权衡.
- 深度学习 (DL) 通过将PB剂量转换为MC等效分布提供解决方案,但在瘤部位的概括性需要调查.
研究的目的:
- 开发和评估基于DL的PBT剂量转换模型.
- 评估模型在多样化和以前未经训练的瘤部位的通用性.
主要方法:
- 在四个瘤部位 (头部,肺,肝脏,前列腺) 的339名患者的PBT数据上训练了一种DL模型.
- 该模型输入CT图像和PB剂量,输出MC等效剂量.
- 在七个未经训练的瘤部位上测试了概括性,使用3D γ-分析和子相似系数 (DSC) 评估了性能.
主要成果:
- 对于大多数未经训练的瘤部位,DL模型实现了高精度 (≥90%的γ通过率以3%/2mm的标准).
- 在食道 (91.3%),乳房 (85.9%) 和四肢骨/软组织 (89.1%) 中,通过率略低一些.
- 大多数未经培训的网站的平均DSC值超过0.8,表明表现良好.
结论:
- 开发的DL模型在PBT中显示了MC等效剂量转换的显著准确性和概括性.
- 该模型的适应性扩展到各种瘤部位,包括那些没有被包括在初始训练中.
- 这种方法可以帮助PBT中心处理各种患者数据和罕见疾病.
更多相关视频
09:49A Whole Body Dosimetry Protocol for Peptide-Receptor Radionuclide Therapy PRRT: 2D Planar Image and Hybrid 2D+3D SPECT/CT Image Methods
Published on: April 24, 2020
10.5K
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
3.3K
相关概念视频
Model Approaches for Pharmacokinetic Data: Distributed Parameter Models
333
Pharmacokinetic models are mathematical constructs that represent and predict the time course of drug concentrations in the body, providing meaningful pharmacokinetic parameters. These models are categorized into compartment, physiological, and distributed parameter models.
The distributed parameter models are specifically designed to account for variations and differences in some drug classes. This model is particularly useful for assessing regional concentrations of anticancer or...
The distributed parameter models are specifically designed to account for variations and differences in some drug classes. This model is particularly useful for assessing regional concentrations of anticancer or...
333
Pharmacokinetic Models: Comparison and Selection Criterion
490
Physiological and compartmental models are valuable tools used in studying biological systems. These models rely on differential equations to maintain mass balance within the system, ensuring an accurate representation of the dynamic processes at play.
Physiological models take a detailed approach by considering specific molecular processes. They can predict drug distribution, metabolism, and elimination changes, providing a comprehensive understanding of how drugs interact with the body.
Physiological models take a detailed approach by considering specific molecular processes. They can predict drug distribution, metabolism, and elimination changes, providing a comprehensive understanding of how drugs interact with the body.
490
