Abstract：
OBJECTIVE: The aim of this study is to prospectively evaluate whether women with copper-containing intrauterine devices (Cu-IUD), currently listed as MR conditional, can safely undergo 3.0 Tesla (3 T) magnetic resonance imaging (MRI).
METHODS: 73 women, age 18-54 years old, with a Cu-IUD who were undergoing MRI for any reason were included consecutively. Pre- and post-MRI standard pelvic ultrasound examinations were completed to determine the appropriate pre- and post-MRI positioning of the Cu-IUD. Displaced IUDs were defined by IUD crossbars not in the fundal portion of the endometrial cavity, a visualized tip in the mid or lower uterus, any part of the device located in the cervical canal or outside of the endometrial canal, a fractured device, or a non-visualized IUD. Additionally, a questionnaire was completed by participants to determine the level of pre- and post-MRI pelvic pain.
RESULTS: There were zero observed displaced Cu-IUDs on post-MRI pelvic ultrasounds (p = 0/70, 95% CI 0, .043). Three participants were dropped from the study due to malpositioned IUDs on pre-MRI pelvic ultrasound. Six patients reported new or worsening pelvic pain/discomfort during or after their MRI examination.
CONCLUSIONS: Our results suggest that performing 3 T MRI using a low SAR setting does not cause displacement of Cu-IUDs, with zero out of 70 patients demonstrating IUD displacement.
METHODS: 73 women, age 18-54 years old, with a Cu-IUD who were undergoing MRI for any reason were included consecutively. Pre- and post-MRI standard pelvic ultrasound examinations were completed to determine the appropriate pre- and post-MRI positioning of the Cu-IUD. Displaced IUDs were defined by IUD crossbars not in the fundal portion of the endometrial cavity, a visualized tip in the mid or lower uterus, any part of the device located in the cervical canal or outside of the endometrial canal, a fractured device, or a non-visualized IUD. Additionally, a questionnaire was completed by participants to determine the level of pre- and post-MRI pelvic pain.
RESULTS: There were zero observed displaced Cu-IUDs on post-MRI pelvic ultrasounds (p = 0/70, 95% CI 0, .043). Three participants were dropped from the study due to malpositioned IUDs on pre-MRI pelvic ultrasound. Six patients reported new or worsening pelvic pain/discomfort during or after their MRI examination.
CONCLUSIONS: Our results suggest that performing 3 T MRI using a low SAR setting does not cause displacement of Cu-IUDs, with zero out of 70 patients demonstrating IUD displacement.
摘要：
目的：这项研究的目的是前瞻性评估是否有含铜宫内节育器（Cu-IUD）的妇女，目前列为MR条件，可以安全地进行3.0特斯拉（3T）磁共振成像（MRI）。
方法：73名女性，年龄18-54岁，包括因任何原因正在接受MRI检查的Cu-IUD患者。完成了MRI前和后标准盆腔超声检查，以确定Cu-IUD的MRI前和后定位。移位的宫内节育器由不在子宫内膜腔底部的宫内节育器横杆定义，子宫中部或下部的可视化尖端，位于宫颈管或子宫内膜管外的装置的任何部分，一个断裂的装置,或者非可视化宫内节育器。此外,参与者完成了一项调查问卷,以确定MRI前后盆腔疼痛的水平.
结果：在MRI后盆腔超声检查中观察到零移位的Cu-IUD（p=0/70，95％CI0，.043）。由于MRI前盆腔超声检查中宫内节育器错位，三名参与者从研究中退出。六名患者在MRI检查期间或之后报告了新的或恶化的盆腔疼痛/不适。
结论：我们的结果表明，使用低SAR设置进行3TMRI不会导致铜宫内节育器移位，70名显示宫内节育器移位的患者中没有。
方法：73名女性，年龄18-54岁，包括因任何原因正在接受MRI检查的Cu-IUD患者。完成了MRI前和后标准盆腔超声检查，以确定Cu-IUD的MRI前和后定位。移位的宫内节育器由不在子宫内膜腔底部的宫内节育器横杆定义，子宫中部或下部的可视化尖端，位于宫颈管或子宫内膜管外的装置的任何部分，一个断裂的装置,或者非可视化宫内节育器。此外,参与者完成了一项调查问卷,以确定MRI前后盆腔疼痛的水平.
结果：在MRI后盆腔超声检查中观察到零移位的Cu-IUD（p=0/70，95％CI0，.043）。由于MRI前盆腔超声检查中宫内节育器错位，三名参与者从研究中退出。六名患者在MRI检查期间或之后报告了新的或恶化的盆腔疼痛/不适。
结论：我们的结果表明，使用低SAR设置进行3TMRI不会导致铜宫内节育器移位，70名显示宫内节育器移位的患者中没有。
