This is often confirmed with a trans-abdominal ultrasound, or in some cases, a transvaginal ultrasound. The fibroids can also be confirmed using magnetic resonance imaging (MRI), which is our preferred method of visualizing the fibroids prior to uterine artery embolization. MRI is our preferred method of evaluation because it gives the best visualization of the fibroid, its location, and the rest of the pelvis, including the ovaries. This supplies us with the necessary pre-procedural information.