Chen S, Zhang J, Zhang H, Guan Q, Du Y, Yao C, Zhang J. Myocardial motion analysis for determination of Tei-index of human heart.
SENSORS (BASEL, SWITZERLAND) 2010;
10:11428-39. [PMID:
22163536 PMCID:
PMC3231081 DOI:
10.3390/s101211428]
[Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2010] [Revised: 11/24/2010] [Accepted: 12/08/2010] [Indexed: 11/17/2022]
Abstract
The Tei index, an important indicator of heart function, lacks a direct method to compute because it is difficult to directly evaluate the isovolumic contraction time (ICT) and isovolumic relaxation time (IRT) from which the Tei index can be obtained. In this paper, based on the proposed method of accurately measuring the cardiac cycle physical phase, a direct method of calculating the Tei index is presented. The experiments based on real heart medical images show the effectiveness of this method. Moreover, a new method of calculating left ventricular wall motion amplitude is proposed and the experiments show its satisfactory performance.
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