Investigation of human right ventricular cast specimens |
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Authors: | Hans-Peter Dübel Doz Dr sc med Paul Romaniuk Alexander Tschapek |
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Institution: | 1. Institut für kardiovaskul?re Diagnostik, Bereich Medizin (Charité), Humboldt-Universit?t Berlin, Schumannstr. 20/21, DDR-1040, Berlin 2. Computer Center, Central Institute of Molecular Biology, Academy of Sciences of the German Democratic Republic, Berlin
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Abstract: | Fifty human right ventricular cast specimens were subjected to X-ray cineangiography in biplane right anterior oblique and
left anterior oblique (RAO/LAO) projection. From the silhouettes seen in the two projection planes we estimated areas and
lengths using a lightpen minicomputer system and calculated the volumes using various methods. The calculated volume values
were compared with the true values determined by water displacement. The methods were then arranged is order of decreasing
accuracy. Criteria for judging model quality were the mean squared deviations, correlation coefficient, and residual variance.
The most accurate calculation of the right ventricular volume was obtained with Ferlinz' method and our own empirical approach. |
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Keywords: | Heart volume measurement Cast specimens right ventricle Cineangiography biplane |
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