Zanke S
Zentralbl Gynakol. 1979;101(12):782-8.
The types Dana super and Copper T intra-uterine devices (IUD) were reliably localised by ultrasonic B-scanning in 100 patients. Five dislocalisations were recorded and one erroneous interpretation in a case of uterus myomatosus. The method was found to be applicable to screening test and is recommended particularly for the following cases: clinically undetectable thread, following insertion, before removal of IUD, and in early pregnancy by the tenth gestational week.
通过超声B扫描，在100例患者中可靠地定位了Dana超级型和铜T型宫内节育器（IUD）。记录到5例移位情况，在1例子宫肌瘤病例中出现1次错误解读。该方法适用于筛查试验，特别推荐用于以下情况：插入后临床上无法检测到尾丝、取出IUD之前、以及妊娠第10周之前的早期妊娠。
