RADIOGRAPHIC HEART-VOLUME ESTIMATION IN NORMAL CATS |
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| Authors: | Nils-Erik Ahlberg MD PhD Kerstin Hansson VDM Leif Svensson PhD Krister Iwarsson VDM PhD |
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| Affiliation: | Department of Clinical Radiology, The College of Veterinary Medicine, The Swedish University of Agriculture Sciences, Uppsala, Sweden (Ahlberg, Hansson), the Department of Hospital Physics, Hud-dinge University Hospital, Huddinge, Sweden (Svensson), and the Laboratory Animal Unit, Karolinska Institutet, Stockholm, Sweden (Iwarsson). |
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| Abstract: | Heart volume mensuration was evaluated on conventional radiographs from eight normal cats in different body positions using computed tomography (CT). Heart volumes were calculated from orthogonal thoracic radiographs in ventral and dorsal recumbency and from radiographs exposed with a vertical X-ray beam in dorsal and lateral recumbency using the formula for an ellipsoid body. Heart volumes were also estimated with CT in ventral, dorsal, right lateral and left lateral recumbency. No differences between heart volumes from CT in ventral recumbency and those from CT in right and left lateral recumbency were seen. In dorsal recumbency, however, significantly lower heart volumes were obtained. Heart volumes from CT in ventral recumbency were similar to those from radiographs in ventral and dorsal recumbency and dorsal/left lateral recumbency. Close correlation was also demonstrated between heart volumes from radiographs in dorsal/ left lateral recumbency and body weights of the eight cats. |
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| Keywords: | cat heart volume computed tomography conventional radiographs |
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