Guit G L, Kroon H M, Chin J G, Pauwels E K, van Voorthuisen A E
J Nucl Med. 1986 Apr;27(4):484-90.
A right-sided position of the heart in the chest in situs solitus is an abnormal feature easily discernible from a plain chest radiograph. This cardiac malposition may be due to cardiac displacement (dextroposition), which is usually a feature of lung disease, or a structural abnormality of the heart (dextrocardia). Because each condition has different clinical pathologic implications, it is important to distinguish them. Chest films, however, often provide no conclusive information. We performed radionuclide angiocardiography (RNA) in six adults with a cardiac malposition in situs solitus. It was found that morphologic data obtained from the serial images may distinguish dextroposition from dextrocardia. In addition, these images permitted us to diagnose congenitally corrected transposition, a cardiac anomaly which occurs with increased frequency in situs solitus with dextrocardia. Quantitative shunt detection performed during this procedure is helpful in the differential diagnosis of dextroposition and able to distinguish uncomplicated dextrocardia from dextrocardia associated with other cardiac abnormalities. RNA therefore is a valuable and easily performed method in the analysis of cardiac malpositions in adults.
在正常心脏位置的情况下，心脏位于胸腔右侧是一种可通过胸部X线平片轻易识别的异常特征。这种心脏异位可能是由于心脏移位（右位心），这通常是肺部疾病的一个特征，也可能是心脏的结构异常（右位心）。由于每种情况都有不同的临床病理意义，因此区分它们很重要。然而，胸部X线片往往无法提供确凿的信息。我们对6名心脏位置正常但有心脏异位的成年人进行了放射性核素心血管造影（RNA）检查。结果发现，从系列图像中获得的形态学数据可以区分右位心和右位心。此外，这些图像使我们能够诊断先天性矫正型大动脉转位，这是一种在右位心的正常心脏位置中发生率增加的心脏异常。在此过程中进行的定量分流检测有助于右位心的鉴别诊断，并能够区分单纯性右位心和与其他心脏异常相关的右位心。因此，RNA是分析成人心脏异位的一种有价值且易于实施的方法。
