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- W2393970005 abstract "Objective To investigate the feasibility and best method in the assessment of left ventricular (LV) function with transthoracic three dimensional echocardiography(3DE).Methods Transthoracic 3DE LV data sets were acquired in 17 normal subjects using 60, 30 and 10 slices (3D 60 、3D 30 、3D 10 )respectively with a magnetic tracking system and freehand device. The LV end diastolic volume (LVEDV) and end systolic volume (LVESV) were measured from each 3DE data set with the “summation of disks” method, and stroke volume (SV) and ejection fraction (LVEF) was derived from those. LVEF from 2DE using Simpson method was also measured.Results ① The reconstruction image of 3D 10 was incomplete with many irregular interruptions in the LV wall. The images of 3D 60 and 3D 30 were clear, and cardiac structures could be well defined. ② LVEF from 2DE was 0.62 ± 0.06 , which showed excellent correlation with LVEF from 3D 60 and 3D 30 (r= 0.87 and 0.83 , respectively, P 0.001 ). ③ No significant differences (P 0.1 , respectively), but excellent correlation in EDV,ESV,SV and EF were found between 3D 60 and 3D 30 . ④ The 3D 30 acquisition time was ( 72.82 ± 17.16 )s, which was 48% less than the 3D 60 acquisition time ( 152.55 ± 53.27 )s.Conclusions It is feasible to assess LV function by transthoracic 3DE with a magnetic tracking system and freehand device. Since 3D 30 has the same accurate results as 3D 60 and can save half of the acquisition time. It is more suitable for clinical use." @default.
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- W2393970005 date "2001-01-01" @default.
- W2393970005 modified "2023-09-26" @default.
- W2393970005 title "Assessment of left ventricular function by transthoracic three dimensional echocardiography" @default.
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