Objective To study the effect existed in the course of adopting different thickness and chromatics of various opaques so that a good methods can be provided for clinical care in prosthodontics.
目的研究不同品牌不透明层的厚度对修复体颜色的影响。
Objective:To assessthe ultrasonographicdetection of nuchal translucency thicknessin identifying chromosomally abnormal foetuses.
目的:评价超声测量胎儿颈项透明层厚度在检出胎儿染色体异常方面的作用。
Fetal nuchal translucency is an anatomicstructure which can be examined by ultrasound during the first trimester and the early times of the second trimester of pregnancy.
颈项透明层是早孕及中孕早期胎儿超声可见的一个解剖结构,为了弄清超声测定胎儿颈项透明层厚度在产前检查中的意义,本文就国内外文献对胎儿颈项透明层与产前检查的关系作一综述。
