Lieb W E, Mohr A, Brühl K
Fortschr Ophthalmol. 1989;86(6):679-81.
Dacryocystography is a standard technique for the visualization of the lacrimal pathways. In 1974, Lloyd et al. first described manual subtraction of dacryocystograms. Digital subtraction dacryocystography has definite advantages compared to the conventional dacryocystograms and manual subtraction. Besides the clearly superior topographic display, it also provides information about the functional status of the nasolacrimal pathway. Even though slightly more time consuming, this examination is well justified by the superior quality of the depiction of fine topographic details. Other advantages are the kinetic evaluation of tear flow, digital image analysis and the relatively low radiation dose.
泪囊造影术是一种用于显示泪道的标准技术。1974年，劳埃德等人首次描述了泪囊造影片的手工减法。与传统泪囊造影片和手工减法相比，数字减影泪囊造影术具有明显优势。除了明显更优越的地形图显示外，它还能提供有关鼻泪道功能状态的信息。尽管这项检查稍微耗时一些，但因其对精细地形细节的描绘质量更高，所以是很有必要的。其他优点包括泪液流动的动力学评估、数字图像分析以及相对较低的辐射剂量。
