A COMPUTED TOMOGRAPHIC STUDY OF VOLUME AND X-RAY ATTENUATION OF THE LUNGS OF BEAGLES IN VARIOUS BODY POSITIONS |
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| Authors: | Nils-Erik Ahlberg Med Dr Fredrik Hoppe VDM Ulrike Kelter MD† Leif Svensson PHD‡ |
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| Institution: | Department of Clinical Radiology, The College of Veterinary Medicine, The Swedish University of Agriculture Sciences, Uppsala, Sweden.;Department of Diagnostic Radiology, Huddinge University Hospital, Huddinge, Sweden.;Department of Physics, Huddinge, University Hospital, Huddinge, Sweden. |
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| Abstract: | The influence of body position on volume and x-ray attenuation of the lungs of three Beagles was investigated with computed tomography. In left and right lateral recumbency, the dependent lung had decreased volume and increased x-ray attenuation compared with ventral recumbency. Volume and x-ray attenuation of the nondependent lung, however, were unchanged. In dorsal recumbency, there was a vertical gradient of x-ray attenuation being increased dorsally and decreased ventrally compared with ventral recumbency where regional differences in x-ray attenuation were not found. Results indicate a risk of overlooking a mass in the dependent pulmonary parenchyma of dogs in lateral and dorsal recumbency. Regional differences in x-ray attenuation of the lungs of dogs can be avoided if the radiographs are obtained with the dog in ventral recumbency. |
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| Keywords: | dog computed tomography x-ray attenuation lungs body position |
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