TY - JOUR
AU - Lins, Aguinaldo
AB - Measurement of the Aortic Diameter by Geometrical Method Aguinaldo Lins , M.D. , Director of the X-ray Institute Medical School Recife , Brazil Excerpt Modern technics greatly simplify diagnosis. In the exploration of the mediastinal organs, it was teleradiography that allowed Abreu to create the radiogeometry of the mediastinum that will serve as the basis of this difficult chapter of modern semeiology. The images are changed in different perspectives because the only condition of visibility of the vascular outlines has its anatomical expression in the pulmonary contiguity. The processes of the mensuration of the aortic caliber of Vaquez and Bordet, Lippmann, and Quiring were based on a wrong interpretation of the digitiform shadow thought to be produced by the ascending aorta. Abreu's method (intertracheo-pulmonary mensuration) is less susceptible to mistakes than that of Kreuzfuchs (inter-esophagus-pulmonary measurement). In 1931 I suggested that one could calculate the diameter of the artery by looking for the center of the aortic button which is the first left higher arch of the mediastinum; finding the center, one gets the radius; doubling the radius, one will have the diameter of the crossing point. To find the center, one can employ one of three following methods: Mark three points in the arch; join these points by means of two pieces of string, and raise a perpendicular in the middle of each of them. The intersection of these perpendiculars is the center (Fig. 1). Trace two strings anywhere on the arch; raise a perpendicular in the middle of each, and the center will be at the meeting of the two perpendiculars (Fig. 2). Choose any point of the curve and trace an arch of an almost complete circle; centering in intersections of this circle with the curve given, describe, with the same radius of the incomplete circle, two arches, through whose intersections pass two straight lines. The meeting of these will define the center (Fig. 3). After five years I feel myself competent to affirm that experience has given me the conviction that this method allows one in all cases to obtain with mathematical precision the diameter of the aorta. Copyrighted 1937 by The Radiological Society of North America, Inc.
TI - Measurement of the Aortic Diameter by Geometrical Method
JO - Radiology
DO - 10.1148/29.6.720
DA - 1937-12-01
UR - https://www.deepdyve.com/lp/radiological-society-of-north-america-inc/measurement-of-the-aortic-diameter-by-geometrical-method-PRSl0FzaF0
SP - 720
VL - 29
IS - 6
DP - DeepDyve
ER -