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在患有活跃巨细胞动脉炎的患者中比较[18F]氧葡萄糖和[68Ga]DOTA-TATE
Alison H Clifford1, Jonathan Abele2, Ryan Hung2
1Division of Rheumatology, Department of Medicine, University of Alberta, Edmonton, AB, Canada.
EJNMMI reports
|February 28, 2025
概括
在这项试点研究中,Ga-HA-DOTA-TATE在检测巨细胞动脉炎 (GCA) 的血管炎症方面与FDG没有表现出优势. 动脉吸收较低,与[68Ga]Ga-HA-DOTA-TATE较少明显,这表明[18F]FDG仍然是GCA的首选成像剂.
科学领域:
- 核医学就是核医学.
- 放射性药理学 是一种放射性药理学.
- 血管成像 血管成像
背景情况:
- 化氧糖 (FDG) PET/CT是检测巨细胞动脉炎 (GCA) 中大血管血管炎的标准.
- 葡萄糖皮质类药物治疗可以降低GCA患者[18F]FDG的疗效.
- 正在研究新的PET标记剂以提高诊断性能.
研究的目的:
- 为了比较[68Ga]Ga-HA-DOTA-TATE PET/CT与[18F]FDG PET/CT在患有活性GCA的患者的诊断性能.
- 评估血管区域的标记物吸收,并评估目标与背景的比率.
主要方法:
- 在八名活跃的GCA患者中,以[FDG]和[Ga]Ga-HA-DOTA-TATE为两种[FDG]和[Ga]Ga-HA-DOTA-TATE进行前性,序列性PET/CT成像.
- 两个核医学专家对图像进行盲目评估.
- 在八个血管区域使用SUVmax和目标背景比率 (TBRRA,TBR肝脏) 来量化标志物吸收.
主要成果:
- [18F]FDG PET/CT显示右心房的背景活性较高,与[68Ga]Ga-HA-DOTA-TATE (p < 0.001) 相比.
- [68Ga]Ga-HA-DOTA-TATE的肝脏吸收量显著高于[18F]FDG (p < 0.001). 肝脏吸收量显著高于[18F]FDG (p < 0.001). 肝脏吸收量显著高于[18F]FDG (p < 0.001). 肝脏吸收量显著高于[18F]FDG (p < 0.001). 肝脏吸收量显著高于[18F]FDG (p < 0.001).
- 血管吸收 (SUVmax和TBR肝) 与所有血管区域的[18F]FDG相比,与[68Ga]Ga-HA-DOTA-TATE (p ≤0.05) 相比,在所有血管区域的[18F]DG显著更高.
结论:
- 在这项试点研究中,Ga-HA-DOTA-TATE在活性GCA中表现出较低且不那么明显的动脉吸收,而不是FDG.
- 没有确定[68Ga]Ga-HA-DOTA-TATE与[18F]FDG在检测GCA中的血管炎症方面的明显优势.
- 需要在更大的队列中进行进一步的研究,以充分阐明[68Ga]Ga-HA-DOTA-TATE在GCA成像中的作用.
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