Computed Tomography of the Heart by Ultrasound
by R. Pini,
M. Costi,
G. A. Mensah,
L. Masotti,
K. L. Novins,
D. P. Greenberg,
M. Cerofolini, and
R. B. Devereux.
Computers in Cardiology 1992,
pages 17-20. IEEE Computer Society, 1992.
Abstract
We developed a new echocardiographic transducer that allows acquisition
of 50 standard two-dimensional (2D) images at 3.6 degree increments of
rotation around its central axis from any acoustic window. To
reconstruct three-dimensional (3D) images of the beating heart, an entire
cardiac cycle was recorded form each transducer position with automatic
ECG-gating. For each frame of the cardiac cycle, the 50 images digitized
in cylindrical coordinates were processed to reconstruct a 3D cone of
information in cartesian coordinates. From the 3D matrices, 2D images in
any plane can be derived or full 3D perspective projections can be
visualized. In conclusion we have developed a new echocardiographic
system that allows a computed 3D reconstruction of the beating heart
without cumbersome external reference systems.
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Last modified: January 1996.