Intrauterine contraceptive devices: evaluation by sonography.

Area of Science:

• Radiology
• Medical Imaging
• Gynecology

Background:

• Intrauterine devices (IUDs) are common contraceptives.
• Accurate placement is crucial for efficacy and safety.
• Sonography is a key imaging modality for gynecological assessment.

Purpose of the Study:

• To evaluate sonographic features for identifying intrauterine device (IUD) location.
• To determine the accuracy of ultrasound in confirming correct IUD placement.

Main Methods:

• In vitro and clinical evaluation of sonographic features of IUDs in 50 patients.
• Analysis of posterior acoustic shadowing, entrance-exit reflections, and device morphology.
• Assessment of specific IUD types, including Lippes Loops and Copper 7 devices.

Main Results:

• Posterior acoustic shadowing observed in 90% of cases.
• Entrance-exit reflections detected in 65% of patients.
• High accuracy in identifying type-specific morphology (94% for Lippes Loops, 81% for Copper 7).

Conclusions:

• Sonographic features reliably identify intrauterine devices (IUDs).
• Recognition of characteristic features and surrounding endometrium confirms correct intrauterine location.
• Ultrasound provides unequivocal and accurate determination of IUD placement.