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Guide to Pelvic Ultrasound IUD Placement (With Real Imaging Examples)
Par
Charles M. Carlsen
[lmt-post-modified-info]
4 min lire

Guide to Pelvic Ultrasound IUD Placement (With Real Imaging Examples)

A guide to pelvic ultrasound IUD placement, showing normal vs misplaced findings. See real ultrasound examples and understand when IUD imaging is needed.
Spécialiste des produits : Emma Clark
Spécialiste des applications cliniques : Dr. James Bennett

Intrauterine devices (IUDs) are a popular option among women who want long-term but reversible contraception. Experts suggest women can keep an IUD for up to 10 years, and such a lengthy time means it needs to be properly placed to be safe and effective.

It also means that pelvic ultrasound IUD placement checks play a vital role. They can confirm if the IUD is properly positioned or if interventions are needed for a malpositioned device that’s causing symptoms.

In this pelvic ultrasound placement guide, you have answers to what will a pelvic ultrasound show, what an IUD looks like on an ultrasound, when it is properly placed and when not, and when an IUD placement ultrasound is required.

What Will a Pelvic Ultrasound Show?

A common question patients ask in relation to an IUD is, "What will a pelvic ultrasound show?” Take, for example, this Redditor who’s so worried about whether her secret IUD would show on an ultrasound. 

Well, the answer is, yes. 

When the sonographer or your gynecologist performs a pelvic ultrasound, they have a real-time view of the uterine anatomy, including: 

  • The uterus.
  • The endometrial cavity. 
  • The cervix. 
  • Other nearby structures, like the ovaries.

If you have an IUD, the primary focus when performing an ultrasound is the uterine cavity. So, how will the IUD appear on ultrasound?

How an IUD Appears on Pelvic Ultrasound

Once the sound waves hit the IUD in the uterine cavity, it appears as a bright structure against the softer background of the uterine tissue.

Specifically, you will see a bright, linear (echogenic) structure forming a T-shape, with acoustic shadowing behind the device. 

The long, vertical part of the IUD (stem) sits within the uterine cavity. The horizontal arms extend outward at the top of the uterus, called the fundus.

The two polyethylene monofilaments (retrieval strings) appear at the lower end. They serve for IUD detection during physical examination and for removal.

Keep in mind that IUDs can be copper-containing IUDs or hormonal-releasing (levonorgestrel-containing) IUDs. Both are visible on ultrasound. But copper IUDs reflect a more distinct effect because of their material composition.

So, how do you tell if the IUD is properly positioned or not?

Normally-positioned Vs Mal-positioned IUD

Proper IUD Placement on Ultrasound

When performing a proper IUD placement ultrasound, clinicians look for a very specific position.

A normal IUD placement ultrasound will show:

  • The device in a centered position of the uterus, within the endometrial cavity. 
  • The IUD at the fundus (top portion) of the uterus (not lower).
  • The arms fully extended laterally.

In this position, the IUD ensures maximum effectiveness as a contraceptive, feels comfortable, and does not cause complications such as embedding or expulsion.

Watch this video for a clear view of a normal IUD placement on pelvic ultrasound, performed with a handheld Dr Sono Tri-scan Max.

In the video, you can clearly observe:

  • A well-defined IUD within the uterine cavity.
  • Proper alignment at the fundus. 
  • Symmetrical positioning of the device. 

So, when your doctor performs a pelvic ultrasound to assess proper IUD placement, this is what they aim to confirm.

Misplaced IUD on Ultrasound: What to Look For

Although rare, not all IUDs remain in the correct position. In some cases, ultrasound imaging reveals abnormalities that may require medical intervention.

Misplaced IUD ultrasound images may show:

  • Low-lying IUD (appearing below the fundus).
  • Embedded IUD (partially lodged in the uterine wall). 
  • Rotated or tilted IUD.
  • The IUD partially expelled into the cervix.

In any of these cases, you may experience symptoms such as pelvic pain, abnormal or heavy bleeding, and missing or shortened IUD strings.

Watch the video below to see what a mal-positioned IUD on Pelvic Ultrasound looks like.

You notice that:

  • The IUD is not positioned at the fundus.
  • The orientation is irregular.
  • The IUD is not centered within the uterine cavity.

Unlike a properly placed IUD, a misplaced IUD compromises both its effectiveness and your safety. An IUD placement ultrasound comes in extremely handy in such cases, and recherche shows that 3D imaging is especially effective in detecting abnormalities in IUD placement.

Why Ultrasound Is Used for IUD Placement Evaluation

Using ultrasound for IUD placement evaluation is preferred over other imaging techniques because it is safe, efficient, highly accurate, faster, and cost-effective. 

Les Annals of Family Medicine recommends ultrasound as the first-line imaging method for both routine and diagnostic assessments of IUD placement.

This is because pelvic ultrasound IUD assessment comes with these specific advantages:

  • Il est non-invasive and does not cause any form of ionizing radiation. This also makes it a safe option for repeated assessment.
  • It allows real-time visualization of IUD placement, helping clinicians to act quickly in cases where medical intervention is required. Interventions can mean IUD removal, adjustment, or further investigation.
  • Il est safe for women of all ages, since it does not pose any risks to reproductive health.

In addition, ultrasound is widely accessible in all clinical settings. Consider that today, ultrasound can be performed using portable, handheld scanners.

Clinicians can rely on portable ultrasound scanners like our Tri-scan Max in OB/GYN settings. These handheld scanners:

  • Make Point-of-care ultrasound (POCUS) extremely easy.
  • Are extremely handy for bedside assessment.
  • Provide quick and convenient scanning by simply pulling the device out of your lab coat.
  • Have the convenience of being connected to mobile devices, like smartphones, tablets, or iPads.

So, when would you need a pelvic IUD ultrasound?

When Is a Pelvic Ultrasound for an IUD Needed?

Pelvic ultrasound IUD assessment can be performed for different purposes:

  • To guide IUD placement.
  • To confirm correct placement soon after the IUD is inserted.
  • To check that the IUD is still properly placed during the recommended annual assessment.
  • To diagnose problems with the IUD when symptoms suggest malposition or other complications.

As a diagnostic imaging procedure, your doctor may recommend a pelvic ultrasound IUD assessment if:

  • Les strings of the IUD are not detected during physical examination. This may suggest expulsion or malposition.
  • Vous avez pain in the pelvic area.
  • You are experiencing abnormal bleeding.

Keep in mind that, aside from IUD assessment, pelvic ultrasound is also widely used in modern gynecology.

The Role of Pelvic Ultrasound in Modern Gynecology

Pelvic ultrasound is safe, easily accessible, and highly accurate, making it a valuable imaging tool in women’s health.

Beyond IUD evaluation, pelvic ultrasound plays a central role in gynecologic care. Obstetricians and gynecologists use pelvic ultrasound routinely to:

  • Evaluate women’s reproductive organs by assessing the anatomy of the cervix, uterus, ovaries, and fallopian tubes for structural changes or congenital anomalies.
  • Diagnose and monitor reproductive conditions, including ovarian cysts, leiomyomas (fibroids), endometriosis, and adenomyosis, among others.
  • Examine endometrial structure and thickness when investigating pain and abnormal bleeding related to cases like irregular menses and postmenopausal bleeding.
  • Identify causes of chronic or acute pelvic pain, which may be related to ovarian torsion, pelvic inflammatory disease (PID), and deep infiltrating endometriosis (DIE).
  • Monitor pregnancy to confirm fetal location, viability, gestational age, or an ectopic pregnancy in the early months and fetal development in later months.
  • Assess infertility issues by examining ovarian follicles, identifying any structural inhibitors to conception, and assessing ovarian reserves.
  • Guide interventions during procedures like IUD placement, the drainage of pelvic abscesses, and follicular aspiration for IVF.

In all these, knowing what will pelvic ultrasound show helps both clinicians and patients understand results more clearly.

FAQ

Here are answers to some of the most common questions about pelvic ultrasound and IUD placement.

How can you tell if an IUD is in the right place on ultrasound?

A pelvic ultrasound IUD check shows correct placement when it is positioned at the top of the uterus (fundus), centered within the uterine cavity, with arms extended in a T-shape. A normal IUD placement ultrasound confirms its effectiveness and safety.

Can ultrasound detect a misplaced IUD?

Yes, ultrasound for IUD placement is highly effective in identifying abnormalities. Misplaced IUD ultrasound images may show the device tilted, sitting too low, embedded in the uterine wall, or partially expelled into the cervix. Further medical evaluation or immediate intervention is required in these cases.

When do you need a pelvic ultrasound to check an IUD?

A pelvic ultrasound IUD exam is recommended after insertion, when IUD strings are not detectable via physical examination, or if symptoms like pelvic pain or abnormal bleeding occur. The ultrasound answers the question of what will pelvic ultrasound show by revealing placement or detecting complications.

Conclusion

Pelvic ultrasound is a cornerstone in assessing IUD placement. It offers a clear and reliable method of checking whether the device is functioning as it should.

By highlighting the position of the IUD within the uterine wall, IUD placement ultrasound supports effective contraception and helps diagnose and correct related complications.

With the wide availability of portable ultrasound scanners, IUD ultrasound has become more timely, accurate, and affordable. And all that makes patient care more efficient than ever.

Sources d'information

Charles M. Carlsen
Co-fondateur de Dr.Sono
Bonjour ! En tant que cofondateur de Drsono, je contribue au blog DRSONO, en fournissant des informations précieuses et actualisées sur la technologie de l'échographie et l'imagerie diagnostique.
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