在VMAT中对Ca Tongue的孔径形状控制器进行多维评估:对计划复杂性和质量保证的影响
Ajithkumar M1, Subhankar Show1, Sneha Jha1
1Department of Radiotherapy, Meherbai Tata Memorial Hospital, Jamshedpur, India.
Asian Pacific journal of cancer prevention : APJCP
|February 9, 2026
概括
孔径形状控制器 (ASC) 有效地减少了舌头癌症的VMAT计划复杂性,平衡了剂量测量质量和输送精度. 适度的ASC设置为头部和部治疗提供了最佳的妥协.
科学领域:
- 医学物理 医学物理
- 辐射瘤学 辐射瘤学
- 放射治疗规划 放射治疗规划
背景情况:
- 卷度调节弧线疗法 (VMAT) 是一种标准的放射治疗技术.
- 在VMAT中的计划复杂性可能会影响治疗提供和质量保证.
- 孔径形状控制器 (ASC) 是一种工具,可以对VMAT计划的复杂性进行潜在调节.
研究的目的:
- 评估不同孔径形状控制器 (ASC) 设置对语言癌症 (Ca-Tongue) 的VMAT计划优化的影响.
- 评估ASC在调节计划复杂性,维护剂量计完整性和确保准确的治疗交付方面的作用.
主要方法:
- 20名Ca-Tongue患者使用四个ASC设置 (关闭,非常低,中度,非常高) 的回顾性规划.
- 复杂度指标 (MCSv,SAS,MU/cGy) 和剂量指数 (CI,HI,PTV D98%,OAR剂量) 的计算.
- 使用马分析 (3%/3mm,2%/2mm) 和统计分析 (Wilcoxon标记级别测试,线性回归) 的门户剂量计QA.
主要成果:
- 增加ASC水平显著降低了计划的复杂性 (MCSv增加,SAS和MU/cGy下降;p <0.05).
- 较高的ASC水平显示PTV覆盖率略有下降,OAR剂量增加.
- 在所有设置中,Gamma通过率仍然很高,与ASC水平无关的显著改善.
结论:
- ASC有效地减少了Ca-Tongue的VMAT计划复杂性,而不会影响交付准确性.
- 适度的ASC设置在减少复杂性和剂量测量质量之间提供了最佳的平衡.
- 量身定制的ASC临床实施,适度ASC推用于头部和部VMAT,确保安全性和效率.
相关概念视频
Quality Assurance
2.5K
Quality assurance is the overarching term used to describe the activities employed to ensure the proper performance of a system. These activities can be classified into three categories: quality control, quality assessment, and internal corrective measures. Typically, these activities work cyclically: quality control is performed before and during the analysis, while quality assessment occurs during and after the investigation. Internal corrective measures are implemented based on the findings...
2.5K
Quality Control
2.8K
Quality control is one of the three cyclical quality assurance activities that help keep a system under statistical control. Typical quality control activities include creating quality control charts, conducting proficiency testing, and documenting and archiving results.
Quality control helps track data, visualize trends, and identify variations, making it easier to detect deviations that may affect the accuracy of an analysis. One way to do this is by generating a quality control chart, which...
Quality control helps track data, visualize trends, and identify variations, making it easier to detect deviations that may affect the accuracy of an analysis. One way to do this is by generating a quality control chart, which...
2.8K
Tongue
3.1K
The human tongue is a fascinating and complex organ, responsible for various essential functions such as swallowing, speech, and taste. It is also subject to various conditions and diseases. In this article, we delve into the anatomy of the tongue, its roles, and some common conditions that can affect it.
Anatomical Position in the Oral Cavity
The tongue is located within the oral cavity, also known as the mouth. It is attached to the floor of the mouth by a fold of mucous membrane called the...
Anatomical Position in the Oral Cavity
The tongue is located within the oral cavity, also known as the mouth. It is attached to the floor of the mouth by a fold of mucous membrane called the...
3.1K
Tip-of-the-Tongue Phenomenon
530
The tip-of-the-tongue (TOT) phenomenon is a cognitive experience characterized by a temporary inability to retrieve specific information from memory despite having a strong feeling of knowing the information. Although individuals cannot access the target word or detail, they frequently recall related elements, such as its initial letter, syllable count, or context. This partial retrieval often causes frustration, as one might recognize a familiar face or know that a name starts with a specific...
530
The Tongue and Taste Buds
41.1K
The surface of the tongue is covered with various small bumps called papillae, which either distribute what has been ingested (filiform papillae) or contain the sensory taste (or gustatory) receptor cells (fungiform, circumvallate, and foliate papillae). Embedded within each taste-related papilla are the taste buds—clusters of 30 to 100 gustatory receptor cells.
41.1K
Sampling Plans
994
Sampling is a crucial step in analytical chemistry, allowing researchers to collect representative data from a large population. Common sampling methods include random, judgmental, systematic, stratified, and cluster sampling.
Random sampling is a method where each member of the population has an equal chance of being selected for the sample. It involves selecting individuals randomly, often using random number generators or lottery-type methods. For example, when analyzing the properties of a...
Random sampling is a method where each member of the population has an equal chance of being selected for the sample. It involves selecting individuals randomly, often using random number generators or lottery-type methods. For example, when analyzing the properties of a...
994


