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Prognostic Value of Phase Analysis for Predicting Adverse Cardiac Events Beyond Conventional Single-Photon Emission Computed Tomography Variables: Results From the REFINE SPECT Registry
Circulation: Cardiovascular Imaging ( IF 7.5 ) Pub Date : 2021-07-20 , DOI: 10.1161/circimaging.120.012386
Keiichiro Kuronuma, Robert J.H. Miller, Yuka Otaki, Serge D. Van Kriekinge, Marcio A. Diniz, Tali Sharir, Lien-Hsin Hu, Heidi Gransar, Joanna X. Liang, Tejas Parekh, Paul B. Kavanagh, Andrew J. Einstein, Mathews B. Fish, Terrence D. Ruddy, Philipp A. Kaufmann, Albert J. Sinusas, Edward J. Miller, Timothy M. Bateman, Sharmila Dorbala, Marcelo Di Carli, Balaji K. Tamarappoo, Damini Dey, Daniel S. Berman, Piotr J. Slomka

Background:Phase analysis of single-photon emission computed tomography myocardial perfusion imaging provides dyssynchrony information which correlates well with assessments by echocardiography, but the independent prognostic significance is not well defined. This study assessed the independent prognostic value of single-photon emission computed tomography-myocardial perfusion imaging phase analysis in the largest multinational registry to date across all modalities.Methods:From the REFINE SPECT (Registry of Fast Myocardial Perfusion Imaging With Next Generation SPECT), a total of 19 210 patients were included (mean age 63.8±12.0 years and 56% males). Poststress total perfusion deficit, left ventricular ejection fraction, and phase variables (phase entropy, bandwidth, and SD) were obtained automatically. Cox proportional hazards analyses were performed to assess associations with major adverse cardiac events (MACE).Results:During a follow-up of 4.5±1.7 years, 2673 (13.9%) patients experienced MACE. Annualized MACE rates increased with phase variables and were ≈4-fold higher between the second and highest decile group for entropy (1.7% versus 6.7%). Optimal phase variable cutoff values stratified MACE risk in patients with normal and abnormal total perfusion deficit and left ventricular ejection fraction. Only entropy was independently associated with MACE. The addition of phase entropy significantly improved the discriminatory power for MACE prediction when added to the model with total perfusion deficit and left ventricular ejection fraction (P<0.0001).Conclusions:In a largest to date imaging study, widely representative, international cohort, phase variables were independently associated with MACE and improved risk stratification for MACE beyond the prediction by perfusion and left ventricular ejection fraction assessment alone. Phase analysis can be obtained fully automatically, without additional radiation exposure or cost to improve MACE risk prediction and, therefore, should be routinely reported for single-photon emission computed tomography-myocardial perfusion imaging studies.

中文翻译:

相位分析在预测常规单光子发射计算机断层扫描变量之外的不良心脏事件的预后价值:来自 REFINE SPECT 注册表的结果

背景:单光子发射计算机断层扫描心肌灌注成像的相位分析提供了与超声心动图评估密切相关的不同步信息,但独立的预后意义尚未明确定义。本研究评估了迄今为止最大的跨国注册机构中单光子发射计算机断层扫描-心肌灌注成像相位分析的独立预后价值。方法:来自 REFINE SPECT(下一代 SPECT 快速心肌灌注成像注册),共纳入 19 210 名患者(平均年龄 63.8±12.0 岁,男性占 56%)。自动获得应力后总灌注不足、左心室射血分数和相位变量(相位熵、带宽和 SD)。进行 Cox 比例风险分析以评估与主要不良心脏事件 (MACE) 的关联。结果:在 4.5±1.7 年的随访期间,2673 名 (13.9%) 患者经历了 MACE。年化 MACE 率随着相位变量的增加而增加,并且在熵的第二和最高十分位组之间高出约 4 倍(1.7% 对 6.7%)。最佳相位变量截止值对总灌注不足和左心室射血分数正常和异常的患者的 MACE 风险进行分层。只有熵与 MACE 独立相关。当添加到具有总灌注不足和左心室射血分数的模型中时,相位熵的添加显着提高了 MACE 预测的判别能力。7 年,2673 名 (13.9%) 患者经历了 MACE。年化 MACE 率随着相位变量的增加而增加,并且在熵的第二和最高十分位组之间高出约 4 倍(1.7% 对 6.7%)。最佳相位变量截止值对总灌注不足和左心室射血分数正常和异常的患者的 MACE 风险进行分层。只有熵与 MACE 独立相关。当添加到具有总灌注不足和左心室射血分数的模型中时,相位熵的添加显着提高了 MACE 预测的判别能力。7 年,2673 名 (13.9%) 患者经历了 MACE。年化 MACE 率随着相位变量的增加而增加,并且在熵的第二和最高十分位组之间高出约 4 倍(1.7% 对 6.7%)。最佳相位变量截止值对总灌注不足和左心室射血分数正常和异常的患者的 MACE 风险进行分层。只有熵与 MACE 独立相关。当添加到具有总灌注不足和左心室射血分数的模型中时,相位熵的添加显着提高了 MACE 预测的判别能力。最佳相位变量截止值对总灌注不足和左心室射血分数正常和异常的患者的 MACE 风险进行分层。只有熵与 MACE 独立相关。当添加到具有总灌注不足和左心室射血分数的模型中时,相位熵的添加显着提高了 MACE 预测的判别能力。最佳相位变量截止值对总灌注不足和左心室射血分数正常和异常的患者的 MACE 风险进行分层。只有熵与 MACE 独立相关。当添加到具有总灌注不足和左心室射血分数的模型中时,相位熵的添加显着提高了 MACE 预测的判别能力。P <0.0001)。结论:在迄今为止规模最大的影像学研究中,具有广泛代表性的国际队列中,阶段变量与 MACE 独立相关,并且改善了 MACE 的风险分层,超出了仅通过灌注和左心室射血分数评估的预测。相位分析可以完全自动获得,无需额外的辐射暴露或成本来改善 MACE 风险预测,因此,单光子发射计算机断层扫描-心肌灌注成像研究应常规报告。
更新日期:2021-07-21
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