82Rb和[15O]H2O心肌 perfusion PET成像:一个潜在的头对头比较
Martin Krakauer1, Afefah Ismail1, Ulrik Talleruphuus1
1Department of Clinical Physiology and Nuclear Medicine, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Copenhagen, Denmark.
-82 (Rb) PET和氧-15 (O) H2O PET都用于心肌输液成像. 氧-15 H2O PET检测到的区域性缺血病例比Rb PET更多,突出了临床解释的差异.
科学领域:
- 心血管成像 - 心血管成像
- 核医学是一种核医学.
- 无线电探测器开发开发
背景情况:
- -82 (Rb) PET和氧-15 (O) H2O PET是已确定的心肌 perfusion 成像追踪剂.
- 此前没有报道过这两种标记物之间的直接临床比较.
- 本研究涉及我们机构从Rb PET过渡到O-15 H2O PET.
研究的目的:
- 进行Rb PET和O-15 H2O PET的对比临床比较.
- 在怀疑缺血性心脏病的患者中评估这两种标记物的诊断性能.
- 评估不同解释标准对诊断协议的影响.
主要方法:
- 37名疑似冠状动脉狭窄的患者在同一天接受了Rb PET和O-15 H2O PET.
- 图像检测是在休息状态和在腺诱导的压力期间进行的.
- 两名盲人读者评估图像的正常输液,区域性缺血,全球减少或痕,使用O-15 H2O PET的特定标准.
主要成果:
- 在O-15 H2O PET中,发现的区域性缺血患者数量显著增加 (46%对24%,kappa=.31).
- 使用更保守的值 (总输液缺陷≥10%),一致性得到了显著改善 (86%,kappa=.62).
- 对于这两种方法 (kappa=.89) 观察到高的评价者间一致性.
结论:
- 从Rb PET过渡到O-15 H2O PET需要意识到O-15 H2O PET具有更高的区域性缺血检测率.
- 解释标准显著影响了两种PET标记剂之间的协议.
- O-15 H2O PET为检测区域性缺血提供了可能更敏感的方法.
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