. The heart and the aorta; studies in clinical radiology . owthe diaphragm even during deep inspiration. The hori-zontal diameter measures cm. and the longitudinaldiameter, cm. By referring to Moritzs tables, thelongitudinal diameter for a man 1 m. 71 cm. in heightwould be cm. It is increased then by one the other hand, the horizontal diameter remains inthis case nearly normal. Point Gr is raised, the generalform of the left contour is modified, its convexity isaccentuated, the apex of the heart is rounded. HEART IN THE PATHOLOGICAL STATE G7 In the right posterior
. The heart and the aorta; studies in clinical radiology . owthe diaphragm even during deep inspiration. The hori-zontal diameter measures cm. and the longitudinaldiameter, cm. By referring to Moritzs tables, thelongitudinal diameter for a man 1 m. 71 cm. in heightwould be cm. It is increased then by one the other hand, the horizontal diameter remains inthis case nearly normal. Point Gr is raised, the generalform of the left contour is modified, its convexity isaccentuated, the apex of the heart is rounded. HEART IN THE PATHOLOGICAL STATE G7 In the right posterior oblique position the cardiacshadow disappears behind the vertebral column at anangle of 40 degrees. The index in depth exceeds 15 milli-meters. The conclusion is plain: the ventricular volumeis exaggerated. Oblique examination and examinationin depth complete the data of the tracings made in thefrontal position, especially in cases in which anatomicalchanges are not marked. It is understood, moreover,that in the right posterior oblique position the least. Fig. 35. HYPERTROPHY OF THE LEFT VENTRICLE (AORTICINSUFFICIENCY) The apex of the heart is at G, lowered, rounded, the left ventricular out-line GG is elongated. changes in volume of the left ventricle are easily cavity corresponds especially to the posterior partof the organ; when it increases, it does so not only towardthe left, but also in its antero-posterior diameter. As itis the projection of the postero-lateral contour of the leftventricle which is shown on the screen in the right poste-rior oblique position, it is quite natural that this shadow,when it corresponds to an enlarged cavity, should dis-appear slowly. It is also understood that in finding theindex in depth, the oblique ray encounters the contour 68 THE HEART AND THE AORTA of the Heart lower down and projects the shadow of itfurther toward the left. When the hypertrophy of the left ventricle is morepronounced, the apex is pushed further out and lower
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