Initial experience using contrast enhanced real-time three-dimensional exercise stress echocardiography in a low-risk population
Abstract
Overview
Although emerging data support the utility
of real-time three-dimensional echocardiography
(RT3DE) during dobutamine stress testing,
the feasibility of performing contrast
enhanced RT3DE during exercise treadmill
stress has not been explored. Two-dimensional
(2D) and three-dimensional (3D) acquisition
were performed in 39 patients at rest and
peak exercise. Contrast was used in 29
patients (74%). Reconstruction was performed
manually by generating short axis cut
planes at the base, mid-ventricle and apex,
and automatically by generating 9 short axis
slices. Three-dimensional acquisition was feasible
during rest and stress regardless of the
use of contrast. Time to acquire stress images
was reduced using 3D (35.2±17.9 s) as compared
to 2D acquisition (51.6±14.7 s; P<0.05). Using a 17-segment model, of all 663 segments,
588 resting (88.6%) and 563 stress segments
(84.9%) were adequately visualized
using manually reconstructed 3D data, compared
with 618 resting (93.2%) and 606 stress
segments (91.4%) using 2D data (P rest=0.06;
P stress=0.07). We concluded that contrast
enhanced RT3DE is feasible during treadmill
stress echocardiography.
Keywords
Three-dimensional exercise stress echocardiography.
Article Information
Correspondence
Smadar Kort, Department of Medicine, Division of Cardiovascular Medicine, HSC T-16 080, Stony Brook University Medical Center, Stony Brook, NY 11974-8167, USA. E-mail: smadar.kort@stonybrook.edu
Received
2010-03-01T00:00:00
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