| Summary: | 碩士 === 義守大學 === 資訊工程學系 === 103 === The left ventricular ejection fraction (LVEF) estimated by multiple detector computed tomography (MDCT) is adopted to provide clinical applications. However, the estimated methods for LVEF were lack of comparison of accuracy. Hence, the geometric methods for LVEF were evaluated the accuracy and feasibility by MDCT.
The estimations of LVEF on MDCT angiography were measured by single-plane area-length technique (SPA), modified Simpson technique (MST), biplane area-length technique (BPA), cylinder method (Hemi-ellipse), Teichholz, and manual drawing (i.e., the Golden of True, GOT) approaches. The significant difference between geometric method and GOT was applied t-test and analysis of variance test (ANOVA). Meanwhile, the correlation between geometric method and GOT was used regression model, Pearson’s correlation coefficients, and M-A Plot (Bland–Altman Plot).
The LVEF computed by BPA was no significant difference with those of GOT (P=0.084). Moreover, the LVEF of BPA was high positive relation with those of GOT. The LVEF computed by MSA and BPA were closed to those of GOT investigated by M-A Plot with respectively to original and rotated MDCT. However, the coefficient of regression between BPA and GOT were closed to unitary no matter what original and rotated MDCT.
In this study, the LVEF or LV computed by BPA could be a reliable approach to evaluate the left ventricular ejection fraction.
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