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KMID : 0351619650060010001
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Kyungpook Medical Journal
1965 Volume.6 No. 1 p.1 ~ p.19
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Dimensional Studies of the Bronchial Tree by the Cast Specimens
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Abstract
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This study was aimed to observe specific difference of bronchial tree, by three dimensional measurement of the casting specimens.
Casting specimens of bronchial tree were made by injection of artificially synthetized resin of vinylite into bronchial trees in 11 infant corpses, 10 adult dogs and 20 adult rabbits.
Casting specimens of bronchial trees were dimensionally measured by introducing three dimensional coordinates using special measuring apparatus which was devised by author and characteristic values of each branched point on bronchial tree were obtained.
Performing the discriminant analysis on the characteristic value, the zenith angles and the declinations, which are the polar coordinates components of the branched points of bronchial tree of three animals, differences between those examined were found.
And results obtained were summarized as follows:
1. The distribution of branched point of bronchial tree was common in various animal species.
2. The perpendicular components of L_(2) and L_(3), branched point of the left lung of the dog, located above the tracheal bifurcation on the rectangular coordinate. L_(2) means the point of the left apicoposterior segmental bronchus from which the superior and inferior segmental bronchus branches off, and L_(3) the point of the left lower lobe bronchus from which the lateral basal and posterior basal segmental bronchi take off.
3. In discriminant analysis on the zenith angles there was singinficant discrimination between animal species, man-dog, man-rabbit, and dog-rabbit in both left and right lung.
4. In discriminant analysis on the declination, only the left lung of man-dog group showed significant discrimation.
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