扩散权重成像标准化的整个过程:根据QIBA配置文件的幻影验证和临床应用
Se Jin Choi1, Kyung Won Kim1, Yousun Ko1
1Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea.
Diagnostics (Basel, Switzerland)
|March 27, 2024
概括
标准化扩散加权成像 (DWI) 确保明显扩散系数 (ADC) 测量在不同的MRI扫描仪和协议中是准确的和可重复的,满足量化成像生物标志物联盟 (QIBA) 标准可靠的患者成像.
科学领域:
- 医疗成像医学成像
- 生物标志物开发 生物标志物开发
- 放射学 放射学是一门学科.
背景情况:
- 表面扩散系数 (ADC) 需要经过验证的MRI设备和协议才能可靠地用作生物标志物.
- 在临床患者研究中应用ADC测量之前,标准化至关重要.
研究的目的:
- 验证MRI设备和用于扩散加权成像 (DWI) 的临床大脑协议.
- 为了确认在患者成像中验证的协议的性能.
主要方法:
- 使用量化成像生物标记联盟 (QIBA) 扩散幻影和云分析工具来评估四个MRI扫描仪和协议.
- 评估了与 QIBA 配置文件对比的 ADC 测量准确性和可重复性.
- 对17名患者应用验证的协议,评估图像质量和ADC可重复性.
主要成果:
- 所有的MRI扫描仪都显示出高ADC精度 (-2.3%至-0.4%偏差) 和出色的重复性 (wCV 0%至0.3%).
- 经过验证的临床方案以高准确度 (-3.1%至-0.7%偏差) 和强大的可重复性 (wCV 0%至0.1%) 满足了QIBA索赔.
- 患者大脑DWI扫描显示出理想的图像质量 (平均得分≥2.9) 和良好的重复性 (wCV 1.8-2.2).
结论:
- DWI的标准化强有力的确保了ADC在各种MRI设备和协议的准确性和可重复性.
- 经过验证的方法与定量成像生物标志物联盟 (QIBA) 的要求保持一致.
- 这种标准化支持ADC作为临床实践中的生物标志物的可靠使用.
更多相关视频
06:33Construction of a Preclinical Multimodality Phantom Using Tissue-mimicking Materials for Quality Assurance in Tumor Size Measurement
Published on: July 29, 2013
11.3K
07:59Fat-Water Phantoms for Magnetic Resonance Imaging Validation: A Flexible and Scalable Protocol
Published on: September 7, 2018
11.3K
相关概念视频
01:17Assessment of Diffusion and Perfusion
Understanding and evaluating diffusion and perfusion is critical in assessing a patient's respiratory and circulatory health. These processes play key roles in maintaining the body's internal environment, ensuring that tissues receive adequate oxygen while waste products are efficiently removed.
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this principle...
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this principle...
01:19Quality Assurance
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...
01:25Distribution Reliability and Automation
Distribution reliability in electrical power systems is critical for ensuring an uninterrupted power supply to consumers at minimal cost. According to IEEE Standard Terms, reliability is the probability that a device will function without failure over a specified time period or amount of usage. For electric power distribution, this translates to maintaining continuous power supply and addressing customer concerns over power outages. Several indices, as defined by IEEE Standard 1366-2012, are...
01:13Bioequivalence studies: Biowaivers
In certain scenarios, in vitro dissolution tests can replace in vivo bioequivalence studies. This is particularly true when a drug product, though available in varying strengths, maintains proportional similarity in its active and inactive ingredients. In such cases, the need for in vivo bioequivalence studies for lower strength variants may be waived, provided dissolution tests and in vivo studies on the highest strength yield satisfactory results.Bioequivalence can be indicated through...