Sy W M, Krol G, Faunce H, Bay R
Chest. 1975 May;67(5):549-52. doi: 10.1378/chest.67.5.549.
Two hundred eighty-one of 443 lung scans composed of anterior, posterior, and lateral projections (done in our hospital) demonstrated defects. In 3.9 percent of them (11 cases), the defects were delineated in the lateral views only, while in 29.2 percent (82 cases), the lateral views either outlined additional defects not appreciated on the straight views, or showed more extensive lung involvement. In the majority of instances, 56.6 percent (159 cases), the lateral views showed comparable findings and also tended to segmentally localize the defects better. However, in 10.3 percent (29 cases), defects present on the straight projections were not detected on the lateral views. Various causes that could give rise to artefactural abnormalities in the lateral lung scan and therefore inhibit its proper interpretation, are reviewed and discussed. Despite these problems, the lateral may be the only view to demonstrate abnormalities and, in fact, frequently provides additional useful information.
在我院进行的由前后位和侧位投影组成的443例肺部扫描中，有281例显示出缺损。其中3.9%（11例）的缺损仅在侧位视图中显示，而29.2%（82例）的侧位视图要么勾勒出正位视图中未发现的额外缺损，要么显示出更广泛的肺部受累情况。在大多数情况下，56.6%（159例）的侧位视图显示出类似的结果，并且倾向于更好地对缺损进行节段性定位。然而，10.3%（29例）的正位投影上存在的缺损在侧位视图中未被检测到。本文回顾并讨论了可能导致肺部侧位扫描出现伪影异常从而妨碍其正确解读的各种原因。尽管存在这些问题，侧位视图可能是显示异常的唯一视图，事实上，它经常提供额外的有用信息。
