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Morphometry of the dog pulmonary venous tree
1Department of Biomedical Engineering, Memphis State University, Tennessee 38152.
Journal of Applied Physiology (Bethesda, Md. : 1985)
|July 1, 1993
Summary
This study details the geometric and branching patterns of canine pulmonary venous vasculature using silicone casts. Findings reveal fractal dimensions and ratios crucial for biophysical blood flow models.
Area of Science:
- Cardiovascular Physiology
- Anatomy
- Biophysics
Background:
- Understanding pulmonary vascular geometry is essential for biophysical blood flow studies.
- Detailed morphometric data of the pulmonary venous system are lacking for canine models.
Purpose of the Study:
- To describe the morphometry of the canine pulmonary venous vasculature.
- To provide data for biophysical modeling of blood flow.
Main Methods:
- Silicone elastomer casts of canine lungs were created.
- Vessel diameters, lengths, and branching patterns were measured.
- A diameter-defined Strahler ordering scheme and connectivity matrix were used.
Main Results:
- The canine right pulmonary venous tree comprised 11 orders.
- Average ratios for diameter, length, and branch number between successive orders were determined.
- Fractal dimensions for diameter (2.49) and length (2.99) were calculated.
Conclusions:
- Morphometric data were obtained for canine pulmonary venous vessels.
- Calculations of cross-sectional area, vascular volume, and resistance were performed.
- The study provides a foundation for biophysical modeling of pulmonary blood flow.