开发一种经济方法来合成O-(2-[18 F]乙烯) -L-氨酸 (FFET) 的经济方法
Aishwarya Kumar1, Raman Kumar Joshi1, Riptee Thakur1
1Department of Neuroimaging and Interventional Radiology (NI&IR), National Institute of Mental Health & Neurosciences (NIMHANS), Bengaluru, Karnataka, India.
Journal of labelled compounds & radiopharmaceuticals
|July 6, 2023
概括
这项研究表明,O-(2-[18 F]乙烯) -L-氨酸 ([18 F]FET) PET成像有效区分瘤复发与缩. 在半自动化模块中使用2.0毫克TET前体的合成,为脑瘤成像产生更高的放射化学纯度.
科学领域:
- 核医学是一种核医学.
- 放射化学 放射化学是指辐射化学.
- 在瘤学瘤学.
背景情况:
- 使用O-(2-[18 F]乙烯) -L-氨酸 ([18 F]FET) 的正子发射断层扫描 (PET) 对于区分瘤复发与缩非常有价值.
- 优化[18 F]FET的合成对于其临床应用至关重要.
研究的目的:
- 通过改变O-(2-[18 F]乙烯) -L-氨酸 (TET) 前体度来评估[18 F]FET的合成.
- 为了评估自动化和半自动化合成模块中生产的[18 F]FET的放射化学产量和纯度.
- 确认[18 F]FET PET-MR成像在脑瘤评估中的实用性.
主要方法:
- 在自动化 (MX Tracerlab) 和半自动化 (FX2N Tracerlab) 模块中使用2-10毫克TET前体进行了[18 F]FET的合成.
- 对所有合成的[18 F]FET制剂进行了质量控制.
- 人类成像涉及注射220 ± 50 MBq的[18 F]FET用于PET-MR扫描.
主要成果:
- 在两个合成模块中,[18 F]FET的放射化学纯度超过了95%.
- 经过衰变校正的平均产量在2.0毫克TET前体时更高 (自动化模块8.2 ± 2.6%,半自动化模块35.1 ± 3.8%).
- PET成像显示了病变部位的显著吸收 (SUVmax = 7.5 ± 2.6) 与MRI成像相一致.
结论:
- 在半自动化模块中使用2.0毫克TET前体合成[18 F]FET,可提供大量产量和高放射性化学纯度.
- [18 F]FET PET-MR成像是评估脑瘤的可靠工具,有助于区分复发和缩.
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