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Computed tomography of the thorax of calves from birth to the age of 105 days


Ohlerth, Stefanie; Augsburger, H; Abé, Maximilian; Hatz, L; Braun, Ueli; Ringer, Simone K (2014). Computed tomography of the thorax of calves from birth to the age of 105 days. Schweizer Archiv für Tierheilkunde, 156(10):489-497.

Abstract

The present study was undertaken to provide computed tomographic (CT) reference values for structures in the thorax of the calf. Six clinically healthy Holstein-Friesian calves were anaesthetized. Transverse pre- and postcontrast images with a reconstructed 1.5-mm slice thickness were obtained using a multislice-CT scanner at 6 different time points from birth to 105 days of age. Absolute and relative measurements of the trachea, heart, cranial and caudal vena cava, thoracic aorta, right and left principal bronchi, right and left caudal lobar bronchi and the accompanying branches of the right and left pulmonary artery and vein, thoracic lymph nodes and lung density were taken for every time point. All animals were euthanized after the last CT scan, and 4 calves were frozen to generate an atlas comparing gross anatomy with CT. During the study, 4 animals temporarily showed coughing and mucopurulent nasal discharge, and mild to moderate bronchopneumonia and pleuritis were diagnosed using CT. Animals recovered with treatment; however, mild to moderate CT changes remained throughout the study. Even in the 2 clinically normal animals, mild bronchopneumonia was diagnosed on CT.

Abstract

The present study was undertaken to provide computed tomographic (CT) reference values for structures in the thorax of the calf. Six clinically healthy Holstein-Friesian calves were anaesthetized. Transverse pre- and postcontrast images with a reconstructed 1.5-mm slice thickness were obtained using a multislice-CT scanner at 6 different time points from birth to 105 days of age. Absolute and relative measurements of the trachea, heart, cranial and caudal vena cava, thoracic aorta, right and left principal bronchi, right and left caudal lobar bronchi and the accompanying branches of the right and left pulmonary artery and vein, thoracic lymph nodes and lung density were taken for every time point. All animals were euthanized after the last CT scan, and 4 calves were frozen to generate an atlas comparing gross anatomy with CT. During the study, 4 animals temporarily showed coughing and mucopurulent nasal discharge, and mild to moderate bronchopneumonia and pleuritis were diagnosed using CT. Animals recovered with treatment; however, mild to moderate CT changes remained throughout the study. Even in the 2 clinically normal animals, mild bronchopneumonia was diagnosed on CT.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:05 Vetsuisse Faculty > Institute of Veterinary Anatomy
05 Vetsuisse Faculty > Veterinary Clinic > Department of Farm Animals
Dewey Decimal Classification:570 Life sciences; biology
630 Agriculture
Language:English
Date:2014
Deposited On:29 Oct 2014 18:45
Last Modified:05 Apr 2016 18:26
Publisher:Hans Huber
ISSN:0036-7281
Additional Information:Die akzeptierte Version/accepted version entspricht nicht vollständig dem in der Zeitschrift veröffentlichten Artikel. Dies ist nicht die Originalversion des Artikels und kann daher nicht zur Zitierung herangezogen werden.
Publisher DOI:https://doi.org/10.1024/0036-7281/a000636
PubMed ID:25273870

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Download PDF  'Computed tomography of the thorax of calves from birth to the age of 105 days'.
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Download PDF  'Computed tomography of the thorax of calves from birth to the age of 105 days'.
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Content: Supplemental Material
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Download PDF  'Computed tomography of the thorax of calves from birth to the age of 105 days'.
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Content: Supplemental Material
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Download PDF  'Computed tomography of the thorax of calves from birth to the age of 105 days'.
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Content: Supplemental Material
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Download PDF  'Computed tomography of the thorax of calves from birth to the age of 105 days'.
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Content: Supplemental Material
Filetype: Image (TIFF)
Size: 1MB
Download PDF  'Computed tomography of the thorax of calves from birth to the age of 105 days'.
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Content: Supplemental Material
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Download PDF  'Computed tomography of the thorax of calves from birth to the age of 105 days'.
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Download PDF  'Computed tomography of the thorax of calves from birth to the age of 105 days'.
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