Fetal QT Interval Estimation Using Sequential Hypothesis Testing.
Fetal QT Interval Estimation Using Sequential Hypothesis Testing.
复制标题
使用序贯假设检验估计胎儿 QT 间期。
DOI:
10.1109/tbme.2017.2661248
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Wakai,RonaldT
中科院分区:
文献类型:
--
作者:
Yu,Suhong;VanVeen,BarryD;Lutter,WilliamJ;Wakai,RonaldT
Objective: Recent studies utilizing fetal magnetocardiography have demonstrated the efficacy of corrected QT interval (QTc) measurement for in utero diagnosis and prognosis of long QT syndrome, a leading cause of sudden death in early life. The objective of the study was to formulate and test a novel statistical estimation method to detect the end of the fetal T-wave and thereby improve the accuracy of fetal QT interval measurement.Methods: To detect the end of the T-wave, we apply a sequential composite hypothesis test to decide when the T-wave has returned to baseline. The method uses the generalized likelihood ratio test in conjunction with a low-rank spatiotemporal model that exploits the repetitive nature of cardiac signals. The unknown model parameters are determined using maximum likelihood estimation.Results: In realistic simulations, the detector was shown to be accurate to within 10 ms (95% prediction interval), even at noise-to-signal ratios as high as 6. When applied to real data from normal fetuses, the detector agreed well with measurements made by cardiologists (1.46.9 ms).Conclusions: The method was effective and practical. Detector performance was excellent despite the continual presence of strong maternal interference.Significance: This detector serves as a valuable adjunct to traditional measurement based on subjective assessment.
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影响因子:
37.8
作者:
C. Schneider;E. Voth;F. Baer;M. Horst;R. Wagner;U. Sechtem
通讯作者:
U. Sechtem
影响因子:
2.8
作者:
G. Yi;X. Guo;M. Reardon;M. Gallagher;K. Hnatkova;A. Camm;M. Malik
通讯作者:
M. Malik
DOI:
--
发表时间:
1999
期刊:
影响因子:
--
作者:
G. Yi;X. Guo;M. Gallagher;K. Hnatkova;M. Reardon;J. Poloniecki;A. Camm;M. Malik
通讯作者:
M. Malik
影响因子:
39.3
作者:
F. Lombardi
通讯作者:
F. Lombardi
影响因子:
4.8
作者:
Paul Schweitzer
通讯作者:
Paul Schweitzer