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两种PET系统之间使用不同指数进行瘤评估的研究:PET/CT和PET/MRI系统之间的比较
Hirotoshi Hotsumi1, Shirou Ishii1, Hiroki Suenaga1
1Department of Radiology, Fukushima Medical University Fukushima, Japan.
American journal of nuclear medicine and molecular imaging
|September 22, 2023
概括
这项研究发现,PET/CT和PET/MRI测量的瘤吸收指数是可比的. 肝脏和大脑比率等关键指标显示出强烈的相关性,表明瘤评估的可互换性.
科学领域:
- 核医学就是核医学.
- 在瘤学瘤学.
- 放射学 放射学是一门学科.
背景情况:
- 阳位子发射断层扫描/计算机断层扫描 (PET/CT) 广泛用于癌症分期和监测.
- 定子发射断层扫描/磁共振成像 (PET/MRI) 在软组织对比度和辐射剂量降低方面具有潜在的优势.
- 直接比较PET/CT和PET/MRI之间的定量瘤成像生物标志物对于临床采用至关重要.
研究的目的:
- 评估从F-FDG PET/CT和PET/MRI获得的瘤吸收指数的可比性.
- 评估两个成像模式之间的定量测量结果的相关性和一致性.
- 确定用于跨平台瘤评估的特定指数的实用性.
主要方法:
- 55名患有原发性恶性瘤的患者接受了F-FDG PET/CT和PET/MRI.
- 测量了标准化吸收值 (SUV),代谢性瘤体积 (MTV) 和总损伤糖解 (TLG).
- 瘤与肝脏的比率 (TLR) 和瘤与大脑的比率 (TBR) 计算并比较了不同模式.
主要成果:
- 所有测量的瘤指数显示PET/CT和PET/MRI之间存在显著的相关性.
- SUV显示出最强的相关性 (r = 0.933).
- 肝脏比率 (TLRmax) 和大脑比率 (TBRmax) 值在系统之间几乎相同,表明高度可比性.
结论:
- 在PET/CT和PET/MRI之间,F-FDG吸收指数高度可比.
- 在两种PET系统中,TLRmax,TBRmax,MTV50%和TLG50%都是可靠的用于比较瘤评估的方法.
- 这些发现支持在目前PET/CT数据是标准的临床环境中使用PET/MRI的潜力.
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