Gengler L, Hoeffel J C
Radiol Clin (Basel). 1975;44(6):571-8.
The authors emphasize the importance of plain films in showing abnormalities of the aortic arch, which should permit the early radiographic diagnosis of coarctation of the aorta, before the late appearance of rib notching and cardiac enlargement. These anomalies include the elongated aortic arch, the 'figure-3' sign, the 'double indentation' sign, and the dilatation of the ascending aorta. The plain film diagnosis in newborns and infants is difficult, because of subtle or absent change of the aortic arch. Cardiomegaly with left ventricular hypertrophy may give the diagnostic clue.
作者强调了平片在显示主动脉弓异常方面的重要性，这应能在肋骨切迹和心脏增大等晚期表现出现之前，实现主动脉缩窄的早期影像学诊断。这些异常包括主动脉弓延长、“3”字征、“双压迹”征以及升主动脉扩张。由于主动脉弓的变化细微或不明显，新生儿和婴儿的平片诊断较为困难。左心室肥厚导致的心脏增大可能提供诊断线索。
