Accuracy and feasibility of online 3D echo for measurement of LV parameters

Jenkins, C., Chan, J., Hanekom, L. and Marwick, T. H. (2005). Accuracy and feasibility of online 3D echo for measurement of LV parameters. In: Frans Van de Werf, European Heart Journal: Abstracts selected for presentation at the European Society of Cardiology Congress. European Society of Cardiology Congress, Stockholm, Sweden, (314-314). 3rd - 7th September, 2005.


Author Jenkins, C.
Chan, J.
Hanekom, L.
Marwick, T. H.
Title of paper Accuracy and feasibility of online 3D echo for measurement of LV parameters
Conference name European Society of Cardiology Congress
Conference location Stockholm, Sweden
Conference dates 3rd - 7th September, 2005
Proceedings title European Heart Journal: Abstracts selected for presentation at the European Society of Cardiology Congress   Check publisher's open access policy
Place of Publication London ; New York
Publisher Oxford University Press
Publication Year 2005
ISSN 1522-9645
0195-668X
Editor Frans Van de Werf
Volume 26
Issue Supplement 1
Start page 314
End page 314
Total pages 1
Language eng
Formatted Abstract/Summary Background:
The clinical application of real-time 3D echo (RT3D) to LV volume
calculation has been limited by use of off-line, semi-automated measurement in
at least 8 views. The availability of on-line software with less user interaction may
increase the feasibility of RT3D for clinical use. We sought to compare off- and
on-line approaches against magnetic resonance imaging (MRI).

Methods:

Pts who presented to the clinical laboratory for evaluation of LV parameters
(n=110, 94men, age 63+10) were studied with 2DE, online and offline
RT3D and MRI. RT3D measurements were obtained a semi automated LV border
detection based on tracing (online; QLab, Philips, Andover) and edge detection
(offline; 4D LV analysis, Tomtec, Germany). MRI images were obtained using true
FISP during breath-hold (Siemens Sonata 1.5T) and 3D volumes and EF were
measured using CIM software (Auckland University).

Results:

All echo techniques underestimated LV volumes (see Table), but EF estimations
were similar. The best correlation was between MRI vs offline 3D. The
correlation of online RT3D with MRI was significantly better than 2DE approach
(EDV Z=4.2; ESV Z=4.44; EF Z=4.32, all p<0.01). However, correlation of offline
RT3D with MRI was significantly better than online 3DE (EDV Z=2.57, p<0.05;
ESV Z=2.42, p<0.05; EF Z=3.82, p<0.01). Images were considered to be good
quality (endocardium visualized in all walls) in 50 pts; discrepancies between online
and offline RT3D and MRI were similar with good and poor quality images.
Wall motion abnormalities were present in 98 pts; discrepancies with MRI were
similar in pts with and without wall motion abnormalities.

Conclusions:
Online measurement of LV volumes is feasible and more accurate than with 2D. Differences in the 3D techniques may due to amount of interpolation and user interaction with each technique.

Subjects EX
110201 Cardiology (incl. Cardiovascular Diseases)
110299 Cardiovascular Medicine and Haematology not elsewhere classified
Q-Index Code EX

 
Versions
Version Filter Type
Citation counts: Google Scholar Search Google Scholar
Access Statistics: 226 Abstract Views  -  Detailed Statistics
Created: Thu, 23 Aug 2007, 20:28:13 EST