Document Detail

Radiographic and echocardiographic measurement of the heart in obese cats.
MedLine Citation:
PMID:  10955493     Owner:  NLM     Status:  MEDLINE    
A prospective study was undertaken to reconcile radiographic cardiomegaly and normal echocardiography in obese cats and to test a radiographic technique for better distinguishing between pericardial fat and the heart. Ten obese, but otherwise normal cats and 10 non-obese normal cats were used. A body condition scoring system was used to objectively group obese and non-obese normal cats. Two-dimensional echocardiograms were made to verify that all cats had a normal heart. Thoracic radiographs then were made using standard and altered exposure techniques. The hearts were measured on these radiographs using the metric and a vertebral scale system. Obese cats consistently had excessive fat around the heart especially if they also had a large amount of falciform fat. Altering exposure technique by increasing mAs and decreasing kVp sometimes enhanced the radiographic contrast between fat and myocardium. Enhanced radiographic contrast accentuated the double silhouette identifying the true cardiac silhouette within the fat expanded silhouette. Pericardial fat usually was distinguished more readily in lateral than in VD radiographs. In two cats, pericardial fat had a characteristic prominent square corner to the right cranial margin of the cardiac silhouette in VD radiographs. Obesity caused increased width and depth of the thoracic cage. 2D echocardiograms revealed normal cardiac dimensions in both groups of cats and increased precordial distance in the obese group.
A L Litster; J W Buchanan
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association     Volume:  41     ISSN:  1058-8183     ISO Abbreviation:  Vet Radiol Ultrasound     Publication Date:    2000 Jul-Aug
Date Detail:
Created Date:  2000-12-19     Completed Date:  2000-12-19     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9209635     Medline TA:  Vet Radiol Ultrasound     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  320-5     Citation Subset:  IM    
Department of Veterinary Science and Animal Production, University of Queensland, St. Lucia, Australia.
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MeSH Terms
Adipose Tissue / radiography*,  ultrasonography
Cardiomegaly / radiography,  ultrasonography,  veterinary*
Cat Diseases / diagnosis*,  radiography,  ultrasonography
Echocardiography / methods,  veterinary*
Heart / anatomy & histology,  radiography*
Obesity / radiography,  ultrasonography,  veterinary*
Prospective Studies
Radiography, Thoracic / methods
Reference Values

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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