For a proper interpretation of roentgenograms of the chest, an exact knowledge of the relations between the cardiac silhouette and the large vessels and chambers of the heart is necessary.
Many interesting studies of this subject have been made and published by Keith,1 Dietlen, Roessler,2 Parkinson3 Vaquez and Bordet,4 Delherm and Thoyer Rozat, and Laubry, Cottenot, Routier and Heim de Balsac,5 but only the method followed by the last group has seemed to us quite convincing.
With a similar procedure, we have tried to determine clearly the relations that normally exist between the contour of the cardiac shadow in roentgen films and the different chambers and large vessels of the heart.
In Juarez Hospital, of Mexico City, sodium iodide solution was injected into the large vessels and the chambers of the hearts of several cadavers. Roentgenograms were then taken of the chests of
HOYOS JM, QUESADA JJ. NORMAL CARDIOVASCULAR ROENTGEN SILHOUETTE: STUDIED BY MEANS OF ROENTGENOGRAMS OF THE CHESTS OF CADAVERS AFTER OPAQUE SOLUTIONS HAD BEEN INJECTED INTO THE LARGE VESSELS AND CHAMBERS OF THE HEART. Arch Intern Med (Chic). 1943;71(5):666–674. doi:10.1001/archinte.1943.00210050086008
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