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Proceedings Paper

Towards the volumetricardiogram: volume determination of cardiac chambers using 3D matrix-array ultrasound
Author(s): George D. Stetten; Michael Caines; Chikai J. Ohazama; Olaf T. von Ramm
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Paper Abstract

Matrix-array ultrasound is a new medical imaging modality that steers an ultrasound beam electronically in three dimensions. It is the first imaging modality that can view the heart in 3D in real time, making possible the `volumetricardiogram,' i.e., continuous beat to beat measurement of cardiac chamber volume. To create a fully automatic real-time volumetricardiogram, we have developed the flow integration transform (FIT), which operates on 2D images produced by slicing through the 3D ultrasound data. Although lacking rotational or scale invariance, the FIT is designed to operate eventually in dedicated hardware at very high speed, permitting the application of a large battery of test shapes within the period of a single ultrasound frame (approximately 45 milliseconds). To test the FIT, we have volumetrically scanned a series of 21 fluid-filled balloons. We used the FIT to detect circular cross-sections of the balloons by applying a battery of circles over a range of radii. The detected circles were used to compute volumes, which were then compared to volumes determined independently by weight. Our results are encouraging towards further development of this completely automated method of volume determination.

Paper Details

Date Published: 8 May 1995
PDF: 12 pages
Proc. SPIE 2432, Medical Imaging 1995: Physics of Medical Imaging, (8 May 1995); doi: 10.1117/12.208336
Show Author Affiliations
George D. Stetten, Duke Univ. (United States)
Michael Caines, Duke Univ. (United States)
Chikai J. Ohazama, Duke Univ. (United States)
Olaf T. von Ramm, Duke Univ. (United States)

Published in SPIE Proceedings Vol. 2432:
Medical Imaging 1995: Physics of Medical Imaging
Richard L. Van Metter; Jacob Beutel, Editor(s)

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