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PET和SPECT MPI对预测移植后心血管事件的比较有效性
Daniel M Huck1,2,3, Brittany Weber1,2,3, Brittany Schreiber4
1CV Imaging Program (D.M.H., B.W., S.P., J.H., J.M.B., S. Divakaran, R.B., S. Dorbala, M.F.D.C.), Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA.
Circulation. Cardiovascular imaging
|January 16, 2024
概括
移植前正子发射断层扫描 (PET) 心肌 perfusion imaging (MPI) 能够比单光子发射计算断层扫描 (SPECT) 更好地预测移植后的主要心血管不良事件 (MACE). 正常的PET MPI可以识别低风险患者.
科学领域:
- 心脏病学 心脏病学
- 腎臟病學 (nephrology) 是一種醫學專業.
- 核医学是一种核医学.
背景情况:
- 晚期慢性病 (CKD) 患者面临高心血管风险,即使在移植后也会持续存在.
- 移植前的心脏评估对于识别需要进一步评估或在移植前优化风险的高风险个体至关重要.
研究的目的:
- 为了比较移植前正子发射断层扫描 (PET) 心肌 perfusion imaging (MPI) 与单光子发射计算断层扫描 (SPECT) MPI 的预后值,预测移植后主要心血管不良事件 (MACE).
主要方法:
- 一项回顾性研究跟踪了393名接受脏移植的接受者,他们接受了移植前的MPI (208个PET,185个SPECT).
- 移植后记录了主要不良心血管事件 (MACE),包括心肌梗塞,中风,心力衰竭和心脏死亡.
- 考克斯危险回归与倾向权重分析了异常MPI结果 (总 perfusion deficit >5%) 和MACE之间的关联,比较PET和SPECT.
主要成果:
- 异常的PET MPI与移植后的MACE显著相关 (HR3.02,P<0.001),而异常的SPECT MPI没有显著的关联 (HR1.39,P=0.33).
- 与SPECT MPI (R2 0.007) 相比,PET MPI解释了MACE (R2 0.086) 的相对风险更高.
- 正常的PET MPI确定了与正常的SPECT MPI (3.6%,P<0.001) 相比,每年MACE率较低的患者 (2.2%).
结论:
- 移植前PET MPI的发现比SPECT MPI更能预测移植后接受者的MACE.
- 尽管MPI中阻塞性冠状动脉疾病的患病率较低,但PET发现提供了重要的预后信息.
- 在识别低风险患者方面,正常的PET MPI可能优于正常的SPECT MPI,因此需要进一步的前性验证.
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