Fellows K E, Martin E C, Rosenthal A
AJR Am J Roentgenol. 1977 Feb;128(2):249-56. doi: 10.2214/ajr.128.2.249.
Two types of obstructing anomalous muscle bundle are described on the basis of right ventricular angiocardiographic analysis in 28 patients. In the low type the anomalous muscle bundle is located in the midsinus of the right ventricle; in the high type it lies at the subinfundibular level. Ocassionally, both forms of obstruction exist in the same individual. A ventricular septal defect was present in 24 of the 28 patients (85%). Serial catheterizations at a mean interval of 6.6 years demonstrated progession of the obstruction in eight of 15 patients. Differentiation of anomalous muscle bundle from tetralogy of Fallot is facilitated by clear angiographic delineation of the anomalous muscle and the position of the parietal band in most cases, but may not be possible when both anomalies occur together.
基于对28例患者的右心室心血管造影分析，描述了两种类型的梗阻性异常肌束。低位型中，异常肌束位于右心室窦中部；高位型则位于漏斗部以下水平。偶尔，同一个体中会同时存在两种梗阻形式。28例患者中有24例（85%）存在室间隔缺损。平均间隔6.6年的系列心导管检查显示，15例患者中有8例梗阻进展。在大多数情况下，通过清晰的血管造影描绘异常肌束和壁束的位置，有助于将异常肌束与法洛四联症区分开来，但当两种异常同时出现时可能无法区分。
