defined as the distance between line D and the lowermost part of the uvula contour,

\(g\) larynx position, defined as the distance from the cranial-most part of the dens axis to the point where line A crosses line B,

\(h\) laryngeal tilt, defined as the angle between line A and line C,

\(i\) Distance to the highest point of the tongue seen from the front, defined as the distance between the most anterior part of auxiliary line D and the intersection point of line D and the line defined by distance (c),

\(j\) epilaryngeal tube, defined as the shortest distance between the arytenoid cartilage and the epiglottis.

Even though in most cases more than one image could be acquired for each sung pitch, only one image from the middle part of the phonationthoracic major, thoracic major and thoracolumbar or lumbar minor, double thoracic and thoracolumbar or lumbar major, and single thoracolumbar or lumbar major curves. The dependent variable studied was the coronal plane regional angular (Cobb) deformity. The independent variables studied were the lateral and anteroposterior translation of the apex vertebra in relation to the upper end vertebra, and the transverse plane translation and angulation of the apex vertebra in relation to the upper end vertebra. For the model or hypothesis to be true, the apex vertebra to upper end vertebra transverse plane translational distance and angular relationship should increase as the Cobb angle increases. In relation to the upper end vertebra, the apex vertebra always translated laterally, almost always was accompanied by transverse plane translation increase, and usually was