基于X射线能量差异的化引起的开花文物的定量分析,使用计算机断层扫描
Daebeom Park1, Eun-Ah Park2,3, Baren Jeong2
1Department of Clinical Medical Sciences, Seoul National University College of Medicine, Seoul, Korea.
Scientific reports
|May 21, 2024
概括
计算机断层扫描 (CT) 中较高的X射线能量水平并没有减少冠状动脉化的花文物. 定量分析显示,增加的能量和减少的文物尺寸之间没有显著的关系,这挑战了以前的主观评估.
科学领域:
- 医疗成像医学成像
- 放射学 放射学是一门学科.
- 心血管成像 - 心血管成像
背景情况:
- 计算机断层扫描 (CT) 图像中的花文物,由冠状动脉结引起,可能导致不准确的光量尺寸测量.
- 更高的X射线能量水平被主观地建议以减轻这些工件.
研究的目的:
- 量化评估不同X射线能量水平 (千伏峰值[kVp]和千电子伏[keV]) 对减少CT图像中冠状动脉结相邻的开花器件的影响.
主要方法:
- 一项由两部分组成的研究,涉及使用双能CT扫描仪获取幻影和临床数据.
- 使用第三最大全宽度 (FWFM) 方法,对受化影响的相邻像素进行定量测量.
- 在不同的kVp和keV设置中分析光亮长度 (不包括实际化长度) 的变化.
主要成果:
- 无论是kVp还是keV水平的变化都没有显著减少临床研究中化影响的相邻像素的数量.
- 幻影研究表明,不同供应商的keV变化对不同厂商的影响各不相同,其中一些厂商没有显著差异,受影响的像素增加或减少.
- 定量测量表明,较高的X射线能量水平与化影响的相邻像素减少之间没有显著的关系.
结论:
- 较高的X射线能量水平,特别是kVp和keV的调整,并不能显著减少CT扫描上冠状动脉结相邻的开花文物.
- 定量发现与主观评估相矛盾,表明仅仅操纵X射线能量可能不是一个有效的策略,以提高冠状动脉亮度测量在化存在时的准确性.
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