加多,场强度和序列类型对阶段解析功能性肺MRI的量化 perfusion 值的影响
Julian Glandorf1,2, Fynn Brunzema1,2, Filip Klimeš1,2
1Institute for Diagnostic and Interventional Radiology, Hannover Medical School, Hannover, Germany.
PloS one
|August 1, 2023
概括
在阶段解决功能性肺部 (PREFUL) MRI 中的输液量化对加多对比剂,场强度和MRI序列高度敏感. 标准化协议对于可重复的多中心研究至关重要.
科学领域:
- 磁共振成像 (MRI) 是一种磁共振成像技术.
- 肺输液成像 肺输液成像
- 医学成像物理 医学成像物理
背景情况:
- 阶段解决的功能性肺部 (PREFUL) MRI 能够对肺 perfusion 的定量评估.
- 了解影响PREFUL MRI perfusion量化的因素对于临床翻译和多中心研究至关重要.
研究的目的:
- 评估基于加多的对比剂,磁场强度 (1.5T与3T) 和不同的MRI序列 (SPGR与bSSFP) 对PREFULMRI perfusion量化的影响.
- 为了评估PREFUL MRI perfusion测量的可重复性.
主要方法:
- 分析了四个不同的受试者队列:可复制性 (COPD患者),加多的使用 (COPD,PAH,喘),场强度 (健康,CF) 和获取序列 (COPD,健康).
- 统计分析包括威尔科克森签名的等级测试,布兰德-阿尔特曼图谱,语音相关性,直方图分析 (skewness, kurtosis) 和两个样本的科尔摩戈罗夫-斯米尔诺夫测试.
- P值≤0.05被认为具有统计学意义.
主要成果:
- 在所有队列中, perfusion 值显示出显著的线性相关性 (r ≥0.7,P<0.01).
- 加多的使用显著增加了量化 perfusion (P<0.01).
- 较高的场强度 (3T) 增加了组图斜率和曲解 (P=0.01),而bSSFP序列减少了量化的输液和组图斜率/曲解 (P<0.01,P=0.02).
结论:
- 在PREFULMRI中输液量化非常容易受到加多剂,场强度和MRI序列的变化的影响,从而导致扭曲的值.
- 严格遵守相同的研究方案是必要的,以便在未来的多中心PREFULMRI研究中产生可比和可靠的结果.
相关概念视频
Magnetic Resonance Imaging
5.2K
Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
5.2K
Assessment of Diffusion and Perfusion
1.0K
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...
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...
1.0K


