Computed Tomography Study of Thoracic Aorta in the Cat
نویسنده
چکیده
Computed tomography (СТ) with contrast enhancement allows a detailed anatomical description of feline thoracic aorta. For this purpose, 14 sexually mature clinically healthy domestic cats weighing 2.9 to 4.0 kg were investigated. The animals were anaesthetized and fixed in dorsal recumbency on a СТ table (Tomoscan, CX/Q, Siemens). Consequent transversal 5 mm cross-sections were made along the thoracic cavity, caudally to the thirds thoracic vertebra (Th3). The levels corresponding to the best representation of anatomical features of thoracic aorta were selected. The branches of the aortic arch (the brachycephalic trunk and the left subclavian artery) were observed from the first studied Th3 segment to Th4. The aortic arch was detected at the Th5 level. The ascending aorta was visualized almost centrally to the Th6 segment, surrounded by the left atrium, the right atrium and the right ventricle. The descending aorta was observed on the left ventrally to the body of Th6. In caudal direction, the descending aorta was positioned ventromedially to the vertebral column, that was the best visible at Th10. This placement of the descending aorta was preserved up to aortic hiatus. In conclusion, СТ is able to visualize in vivo thoracic aorta and allows a precise anatomical analysis for the needs of diagnostics.
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