Magnetic Field Interactions of Copper-Containing Intrauterine Devices in 3.0-Tesla Magnetic Resonance Imaging: In Vivo Study

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Abstract

Objective

An ex vivo study found a copper-containing intrauterine device (IUD) to be safe for women undergoing an MRI examination at a 3.0-T field. No significant artifacts caused by the metallic implant were detected. However, there are still no in vivo data about these concerns. The aim of this study was to evaluate 3.0-T magnetic field interactions of copper-containing IUDs in vivo.

Materials and Methods

Magnetic field interactions and potential adverse events were evaluated in 33 women using a questionnaire-based telephone survey. Two experienced radiologists performed artifact evaluation on MR images of the pelvis.

Results

Eighteen patients were eligible for the survey. One patient reported a dislocation of the IUD after the MR examination. All other patients had no signs of field interactions. No IUD-related artifacts were found.

Conclusion

MRI at 3.0-T is possible for women with copper-containing IUDs. However, consulting a gynecologist to check the correct position of the IUD and exclude complications after an MR examination is highly recommended. High-quality clinical imaging of the female pelvis can be performed without a loss in image quality.

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Most cited references 30

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Continuation and satisfaction of reversible contraception.

Jeffrey F. Peipert, Qiuhong Zhao, Jenifer Allsworth … (2011)

To estimate 12-month satisfaction and continuation rates of intrauterine device (IUD) and implant users enrolled in the Contraceptive CHOICE Project and compare these measures with women using the oral contraceptive pills (OCPs). We analyzed 12-month data from the first 5,087 participants enrolled in a prospective cohort study of women in the St. Louis region offered contraception at no cost for 3 years. The primary purpose of CHOICE is to promote the use of long-acting reversible contraception (IUDs and implants) and to reduce unintended pregnancies in our region. This analysis includes those participants who received their baseline contraceptive method within 3 months of enrollment and who reached the 12-month follow-up telephone survey time point (n=4,167). Sixty-eight percent of our participants chose a long-acting reversible contraception method (45% levonorgestrel intrauterine system, 10% copper IUD, and 13% subdermal implant), 23% chose combined hormonal methods (11% OCPs, 10% vaginal ring, and 2% transdermal patch), and 8% chose depot medroxyprogesterone acetate. Long-acting reversible contraception users had higher 12-month continuation rates (86%) than OCP users (55%). The two IUDs had the highest 12-month continuation rates: levonorgestrel intrauterine system (88%) and copper IUD (84%). Women using the implant also had very high rates of continuation at 1 year (83%). Satisfaction mirrored continuation: more than 80% of users were satisfied with the IUD compared with 54% satisfied with OCPs. IUDs and the subdermal implant have the highest rates of satisfaction and 12-month continuation. Given that long-acting reversible contraception methods have the highest contraceptive efficacy, these methods should be the first-line contraceptive methods offered to patients.

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Brain MRI lesion load at 1.5T and 3T versus clinical status in multiple sclerosis.

Carrie D. Guss, Ashish Arora, Maria K Houtchens … (2011)

To assess correlation between brain lesions and clinical status with 1.5T and 3T magnetic resonance imaging (MRI). Brain MRI fluid-attenuated inversion-recovery (FLAIR) sequences were performed in 32 multiple sclerosis (MS) patients. Expanded Disability Status Scale (EDSS) score (mean±standard deviation) was 2±2.0 (range 0-8), disease duration 9.3±8.0 (range .8-29) years. FLAIR lesion volume (FLLV) at 3T was higher than at 1.5T (P=.01). Correlation between 1.5T FLLV and EDSS score was poor, while 3T FLLV correlated moderately and significantly (rs=.39, P=.03). When controlling for age and depression, correlations between FLLV and cognitive measures were significant at 1.5T for the Judgment of Line Orientation test (JLO) (rs=-.44, P=.05), the Symbol Digit Modalities Test (SDMT) (rs=-.49, P=.02), and the California Verbal Learning Test Delayed Free Recall (CVLT DR) (rs=-.44, P=.04). Correlations at 3T were also significant for these tests, but of greater magnitude: JLO (rs=-.70, P=.0005), SDMT (rs=-.73, P=.0001), CVLT DR (rs=-.061, P=.003). Additional significant correlations obtained only at 3T included the 2 second-paced auditory serial addition test (rs=-.55, P=.01), the Brief Visuospatial Memory Test-Delayed Free Recall (rs=-.56, P=.007), and the California Verbal Learning Test Total Recall (rs=-.42, P=.05). MRI at 3T may boost sensitivity and improve validity in MS brain lesion assessment. Copyright © 2009 by The American Society of Neuroimaging.

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Analysis of risk factors associated with uterine perforation by intrauterine devices.

E Caliskan, N. Ozturk, S Dilbaz … (2003)

To determine the risk factors for intrauterine devices (IUDs) being displaced into the abdominal cavity. This prospective follow-up study was conducted between 1996 and 2002, at the family planning clinic of a referral hospital. All 8343 women who had a copper T-380A IUD inserted underwent ultrasound examination after 1 year. Relative risk estimates and logistic regression analyses were performed to determine the risk factors associated with uterine perforation by intrauterine devices. Eighteen uterine perforations occurred during the study, giving an incidence of 2.2 per 1000 insertions. When the time elapsed after the last delivery until IUD insertion is considered, postplacental insertion and insertion after 6 months postpartum were found not to increase the risk of uterine perforation. However, IUD insertion 0-3 months postpartum increased the risk of uterine perforation (odds ratio (OR) 11.7, 95% confidence interval (CI) 2.8-49.2) as did insertions at 3-6 months postpartum (OR 13.2, CI 2.8-62). Increasing parity decreased the risk (OR 0.04, CI 0.01-0.1) and increasing number of abortions increased the risk (OR 2.1, CI 1.2-3.6). It is safer to postpone IUD insertion until 6 months after delivery.

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Author and article information

Journal

Journal ID (nlm-ta): Korean J Radiol

Journal ID (iso-abbrev): Korean J Radiol

Journal ID (publisher-id): KJR

Title: Korean Journal of Radiology

Publisher: The Korean Society of Radiology

ISSN (Print): 1229-6929

ISSN (Electronic): 2005-8330

Publication date (Print): May-Jun 2013

Publication date (Electronic): 02 May 2013

Volume: 14

Issue: 3

Pages: 416-422

Affiliations

[1 ]Department of Radiology, Medical University of Vienna, Vienna 1090, Austria.

[2 ]Department of Obstetrics and Gynecology, Medical University of Vienna, Vienna 1090, Austria.

Author notes

Corresponding author: Vanessa Berger-Kulemann, MD, Department of Radiology, Medical University of Vienna, AKH, Waehringer Guertel 18-20, Vienna A-1090, Austria. Tel: +43-1-40400/4890, Fax: +43-1-40400/4897, vanessa.berger-kulemann@ 123456meduniwien.ac.at

Article

DOI: 10.3348/kjr.2013.14.3.416

PMC ID: 3655294

PubMed ID: 23690707

SO-VID: 75d6e8fe-62f6-47ef-8869-b19cb7c9d348

License:

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Magnetic Field Interactions of Copper-Containing Intrauterine Devices in 3.0-Tesla Magnetic Resonance Imaging: In Vivo Study

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Abstract

Objective

Materials and Methods

Results

Conclusion

Related collections

Chinese Journal of Radiological Health

Most cited references 30

Continuation and satisfaction of reversible contraception.

Brain MRI lesion load at 1.5T and 3T versus clinical status in multiple sclerosis.

Analysis of risk factors associated with uterine perforation by intrauterine devices.

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