放置宫内节育器(I UD)是我国妇女最常用的节育方法之一,目前约有50%育龄妇女在使用。B超探查I UD快速、简便、准确。本文旨通过对B超随访I UD检查结果进行分析为临床选择I UD提供依据。1资料与方法1.1.一般资料对322例放置I UD者,于1、3、6个月、1年,以后每年随访1次,其中20～2 IUD insertion is one of the most common birth control methods for women in our country and currently about 50% of women of reproductive age are using it. B-probe I UD fast, easy and accurate. This article aims to provide a basis for the clinical selection of I UD by analyzing the results of IUD examination of B-ultrasonography. 1 Materials and Methods 1.1. General Information on 322 cases of I UD placed in 1, 3, 6 months, 1 year, followed up once a year, of which 20 to 2