Fulton R E, Davis G D
AJR Am J Roentgenol. 1978 Dec;131(6):1003-7. doi: 10.2214/ajr.131.6.1003.
Photographic subtraction is a valuable adjunct for studying patients with pulmonary atresia, ventricular septal defect, and systemic pulmonary collateral vessels. In about 9% of 282 patients, it helped identify the true central pulmonary arteries and whether or not they were confluent. This technique, used retrospectively in evaluating patients previously considered inoperable, has permitted recall of several patients for repeat study and probable corrective or palliative surgery.
摄影减影术是研究患有肺动脉闭锁、室间隔缺损和体肺侧支血管患者的一种有价值的辅助手段。在282例患者中，约9%的患者通过该技术明确了真正的中央肺动脉以及它们是否融合。这项技术在回顾性评估先前被认为无法手术的患者时，使得数名患者得以复诊并接受重复检查，进而可能接受矫正或姑息性手术。
