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使用康普顿-PET系统在体内同时使用F-FDG和Na131I进行3D成像的演示

Donghwan Kim¹, Linlin Yan², Kenji Shimazoe³

¹Department of Nuclear Engineering and Management, The University of Tokyo, 7-3-1 Hongo, Bunkyo City, Tokyo, Japan. kdhkdh0711@gmail.com.

Scientific reports

|September 9, 2024

概括

使用康普顿-PET的同时成像成功地可视化了小鼠中的-18-FDG和-131. 这种双追踪器方法对区分甲状腺癌等级有希望.

科学领域:

核医学就是核医学.
医疗成像医学成像
放射化学放射化学是指辐射化学.

背景情况:

区分高度和低度甲状腺癌对于有效治疗至关重要.
高度癌症显示高-18-氧糖 (18F-FDG) 和低-131 (131I) 的吸收.
低度癌症呈现出高的131I和低的18F-FDG吸收.

研究的目的:

评估使用康普顿-PET系统同时对18F-FDG和Na131I进行体内成像的可行性.
评估康普顿摄像机和用于双同位素成像的PET组件的性能特征.

主要方法:

同时的SPECT (131I) 和PET (18F-FDG) 成像在体内使用一种新的康普顿-PET系统进行.
使用133Ba源的康普顿摄像机的角分辨率和灵敏度的表征.
使用22Na源评估PET系统的空间分辨率和灵敏度.

主要成果:

康普顿摄像头的角度分辨率为12.3°,对356 keV的马射线的灵敏度为2 × 10−5.
该PET系统显示了1.15mm和2.04mm的交轴和轴轴空间分辨率,灵敏度为1.2 × 10−4.
在体内小鼠成像成功地可视化了18F-FDG (心脏,大脑,棕色脂肪) 和131I (甲状腺,胃,膀) 的不同摄入量.
在康普顿摄像机图像中观察到图像工件,当131I活动明显低于18F-FDG活动时.

结论:

同时18F-FDG和131I成像是可以通过开发的康普顿-PET系统实现的.
该系统显示出临床应用的潜力,特别是在区分甲状腺癌亚型方面.
需要进一步优化,以解决具有不同活动的双同位素成像中的工件.

关键词:

康普顿摄像机康普顿摄像机在这里,PET是PET.甲状腺癌成像检查甲状腺癌成像检查

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