Fig. 1From: Radiographic vertical tracheal diameter assessment at different levels along the trachea as an alternative method for the evaluation of the tracheal diameter in non-brachycephalic small breed dogsRight lateral thoracic radiographic view of a clinically normal Miniature Pinscher dog illustrating measurements of vertical tracheal diameters (VTDs) at caudal cervical (level A), thoracic inlet (level B), and intrathoracic (level C) tracheal regions, and measurements of manubrium length (ML), thoracic inlet distance (Ti-D), and proximal 3rd rib-width (PR3-W) for determination of manubrium (M-TI) and thoracic inlet-tracheal indices (Ti-TI) and proximal R3-tracheal scores (PR3-TS) for each absolute and average tracheal diametersBack to article page