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来自正子发射断层扫描图像的放射性特征的稳定性:一个幻象研究比较先进的重建算法和有序子集预期最大化

Takuro Shiiba¹, Masanori Watanabe²

¹Department of Molecular Imaging, Clinical and Educational Collaboration Unit, School of Medical Sciences, Fujita Health University, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan. takuro.shiiba@fujita-hu.ac.jp.

Physical and engineering sciences in medicine

|April 16, 2024

概括

用于正电子发射断层扫描 (PET) 成像的先进重建算法提高了放射性特征的稳定性. 与传统算法相比,这些方法显示出更好的重复性和可重复性,有利于基于PET的放射学和临床应用.

科学领域:

医疗成像医学成像
无线电学 (Radiomics) 是一种辐射学.
图像重建图像的重建

背景情况:

放射学从医学图像中提取定量特征.
定子发射断层扫描 (PET) 对于诊断至关重要.
图像重建算法对放射性特征稳定性产生影响.

研究的目的:

为了比较来自PET图像的放射性特征的重复性和可重复性.
对OSEM进行高级重建算法 (IT,DLR,DPR) 的评估.
了解基于PET的放射学中先进技术的含义.

主要方法:

使用了一种异质的幻影,用4mm和8mm的18F填充珠子.
用OSEM,IT,DLR和DPR重建获得的PET图像.
使用COV,ICC和CCC计算的放射性特征 (原始,波纹) 和评估的稳定性.

主要成果:

先进的算法显示,稳定的放射性特征比OSEM的比例更高 (COV<10%).
先进的方法通常在可重复性 (ICC) 方面表现优于OSEM.
在IT和DPR中,通过3分钟和5分钟的获取,显示出最高的可重复性 (CCC>0.8).

结论:

先进的PET重建方法可以提高放射性特征的稳定性.
这些技术在PET放射学中提供了最佳图像重建的潜力.
提高稳定性可能有利于临床诊断和预后.

关键词:

顺序子集的期望最大化.定子发射断层扫描 (PET) 是一种定子发射断层扫描.放射性特征放射性特征放射性特征重建算法重建的算法稳定的稳定性稳定的稳定性

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