评估来自小容器的图像衍生的输入函数,用于使用全身PET/CT的patlak参数成像
Hongmei Tang1, Yang Wu1, Zhaoting Cheng1
1Department of Nuclear Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430000, China.
European journal of nuclear medicine and molecular imaging
|September 26, 2024
概括
来自各种动脉的图像衍生输入函数 (IDIF) 允许使用全身PET/CT可靠的参数Ki成像. 这种方法避免了侵入性动脉采样,并保持了病变的检测能力,提供了临床相关的数据.
科学领域:
- 核医学就是核医学.
- 放射化学 放射化学是指辐射化学.
- 医疗成像医学成像
背景情况:
- 来自下降大动脉的图像衍生输入函数 (IDIF) 为参数成像提供了对动脉血液采样的非侵入性替代方案.
- 传统的PET成像可能并不总是能够捕捉其视野内的大型船只,从而限制了IDIF的应用.
- 全身PET/CT扫描仪提供了扩展的轴向视野 (AFOV),可以从各种动脉位置提取IDIF.
研究的目的:
- 为了评估动态参数基图像利用来自不同动脉的IDIFs的有效性.
- 评估IDIF源位置对Ki图像量化和病变检测能力的影响.
- 确定较小船只的IDIF是否可以使用全身PET/CT可靠地重建参数Ki图像.
主要方法:
- 23名参与者接受了60分钟的全身[18F]FDG PET扫描.
- 从下降性大动脉,动脉,腹部大动脉和腹腔动脉中提取IDIF.
- 应用了部分体积校正 (PVC),并使用帕特拉克分析进行Ki成像,然后进行定量和主观比较.
主要成果:
- 来自各种动脉IDIF的Ki图像与下降性大动脉的图像具有很高的相似性 (中位数SSIM> 0.98,中位数PSNR> 37dB).
- 从下降的大动脉和其他动脉的Ki值之间发现了强烈的相关性 (r2 > 0.88).
- 不同的IDIF之间没有观察到病变检测能力的显著差异 (P <0.05).
结论:
- 来自较小动脉的IDIF可以可靠地重建参数Ki图像.
- 这种使用全身PET/CT的方法提供了临床相关的信息,而不会影响病变的检测能力.
- 这些发现支持在参数PET成像中使用来自各种动脉源的非侵入性IDIFs.
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