放射治疗剂量积累例程 (RADAR) - 一个具有内置不确定性的新型剂量积累脚本
James G Mechalakos1, Yu-Chi Hu1, Licheng Kuo1
1Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, New York.
Practical radiation oncology
|October 24, 2024
概括
放射治疗剂量积累常规 (RADAR) 脚本有助于解释再辐射剂量积累的不确定性. 它使用voxel-wise圆形搜索来提高准确性,提供带有或没有折扣的剂量积累.
科学领域:
- 辐射瘤学 辐射瘤学
- 医学物理 医学物理
- 放射治疗规划 放射治疗规划
背景情况:
- 准确的剂量积累对于有效的再辐射至关重要.
- 患者位置和解剖学的不确定性可能导致剂量不准确.
- 现有的方法可能无法完全解释这些不确定性.
研究的目的:
- 为了引入和评估RAdiotherapy剂量积累例程 (RADAR) 脚本.
- 用一种新的算法,将不确定性纳入用于再照射的剂量积累中.
主要方法:
- 开发了Eclipse治疗计划系统的RADAR脚本.
- 引入了一个以voxel为智能的圆形搜索算法来建模不确定性.
- 在脊柱再辐射病例上演示了RADAR,并与11名参与者进行了用户评估.
主要成果:
- 圆形搜索算法显著影响了累积的脊髓剂量,在考虑相邻结构时增加了它.
- 将搜索限制在脊髓内减轻了这种剂量增加.
- 用户评估显示,在不确定性应用的情况下,脊髓剂量平均增加了31.6%,在限制的情况下减少了16.7%.
结论:
- 雷达提供了一种新的方法,可以直接解决剂量积累的不确定性.
- 沃克塞尔智能圆形搜索算法提高了再辐射剂量计算的准确性.
- 雷达支持剂量积累,并没有剂量折扣,以灵活规划.
更多相关视频
08:34Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies
Published on: February 6, 2019
20.3K
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
2.7K
相关概念视频
Biological Effects of Radiation
15.3K
All radioactive nuclides emit high-energy particles or electromagnetic waves. When this radiation encounters living cells, it can cause heating, break chemical bonds, or ionize molecules. The most serious biological damage results when these radioactive emissions fragment or ionize molecules. For example, α and β particles emitted from nuclear decay reactions possess much higher energies than ordinary chemical bond energies. When these particles strike and penetrate matter, they...
15.3K
Rational Dosage Regimen: Maintenance Dose and Loading Dose
3.9K
A rational dosage regimen considers a drug's pharmacokinetics, including its absorption, distribution, metabolism, and elimination from the body. By understanding these factors, the appropriate dosage can be determined, and the dosing schedule can be designed to achieve and maintain the desired therapeutic effect while minimizing adverse effects.
In most cases, drugs are administered repetitively or infused continuously to maintain a steady-state concentration in the body. At a steady...
In most cases, drugs are administered repetitively or infused continuously to maintain a steady-state concentration in the body. At a steady...
3.9K
