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Thoracic radiographic appearance in the normal llama.
J S Mattoon1, T C Gerros, M Brimacombe
1Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Oregon State University, Corvallis 97331, USA.
Summary
This study establishes normal radiographic values for the adult llama thorax, aiding in the diagnosis of cardiovascular and respiratory diseases in llamas. These findings provide essential benchmarks for veterinary diagnostics.
Area of Science:
- Veterinary Radiology
- Comparative Anatomy
- Diagnostic Imaging
Background:
- Accurate radiographic assessment of the llama thorax is crucial for diagnosing cardiopulmonary diseases.
- Establishing normal radiographic parameters is essential for identifying abnormalities.
Purpose of the Study:
- To collect quantitative and qualitative radiographic data of the normal adult llama thorax.
- To establish normal ratios and values for thoracic structures in llamas.
- To provide reference data for evaluating llama cardiopulmonary health.
Main Methods:
- 16 normal adult llamas underwent standing right-left lateral thoracic radiography.
- Measurements of cardiac dimensions, tracheal angle, and major vessel ratios were calculated.
- Qualitative observations of pulmonary vessels, airways, and other thoracic structures were recorded.
Main Results:
- Normal ratios of cardiac dimensions to thoracic vertebrae and height were determined.
- Normal values for tracheal angle of divergence and cardiac contact points were established.
- Ratios for pulmonary artery/vein, caudal vena cava, and trachea relative to thoracic vertebra 4 were calculated.
Conclusions:
- The determined normal radiographic values serve as benchmarks for assessing llama thoracic health.
- These data facilitate the identification of cardiac enlargement and pathology in pulmonary vessels and airways.
- This study provides a foundation for improved diagnostic evaluation of cardiovascular and respiratory diseases in adult llamas.