Template:Intrauterine devices - indications and choice of modality
Indications
For intrauterine devices (IUDs), indications for imaging are mainly suspected perforation or expulsion, such as painful insertion and missing strings on vaginal examination.
Choice of modality
- Transvaginal ultrasonography is generally the initial investigation of choice.[1]
- Projectional radiography ("X-ray") of intrauterine devices can detect the absence versus presence of an intrauterine device, which is useful when an IUD is not found on vaginal examination and ultrasonography.[1]
- Low dose CT is indicated when specific anatomic location of the IUD is needed.
- Normal dose CT is indicated in suspected complications such as perforation of nearby organs and/or abscess formation.[1]
- MRI is rarely indicated, but can visualize an IUD with both 1.5-T and 3.0-T magnets.[1]