How you prepareBy Mayo Clinic staff
An MRI uses a magnetic field to create detailed pictures of the inside of your body. Metal objects on — or in — your body may interfere with the magnetic field used during the exam, affecting the quality of the MRI and possibly causing a safety problem. The magnetic field may also damage electronic items.
- If possible, leave jewelry or metal or electronic accessories at home, as you'll be asked to leave these items in the dressing room before the procedure.
- Tell the technologist if you have any metal or electronic devices inside your body, such as metallic joint prostheses, artificial heart valves, implanted electronic devices, cochlear implants, body piercings or dental implants.
Focused ultrasound surgery is performed as an outpatient procedure in an MRI scanning room. The day of treatment you'll need to shave your lower abdomen between your pubic bone and bellybutton.
Shortly before the procedure begins, you'll:
- Have an intravenous line placed in one of your veins to inject contrast material for MRI and to give you medication for relaxation and pain
- Be offered earplugs because the internal part of the magnet produces repetitive tapping, thumping sounds and other noises
- Have special stockings to prevent blood clots put on your legs
- Have a urinary catheter inserted into your bladder to keep the bladder stable during your treatment and improve visibility of the uterus
- Napoli A, et al. MR-guided high-intensity focused ultrasound: Current status of an emerging technology. CardioVascular and Interventional Radiology. In press. Accessed April 30, 2013.
- Hesley GK, et al. MR-guided focused ultrasound for the treatment of uterine fibroids. CardioVascular and Interventional Radiology. 2013;36:5.
- Trumm CG, et al. Magnetic resonance imaging-guided focused ultrasound treatment of symptomatic uterine fibroids. Investigative Radiology. 2013;48:1.
- Coakley FV, et al. Pelvic applications of MR-guided high intensity focused ultrasound. Abdominal Imaging. In press. http://rd.springer.com/article/10.1007%2Fs00261-013-9999-2. Accessed April 30, 2013.
- Van der Kooij SM, et al. Review of nonsurgical/minimally invasive treatments for uterine fibroids. Current Opinion in Obstetrics and Gynecology. 2012;24:1.
- MRI of the body (chest, abdomen, pelvis). RadiologyInfo.org. http://www.radiologyinfo.org/en/info.cfm?pg=bodymr. Accessed April 30, 2013.
- Gallenberg MM (expert opinion). Mayo Clinic, Rochester, Minn. May 17, 2013.
- Stewart EA (expert opinion). Mayo Clinic, Rochester, Minn. May 8, 2013.
- Hesley GK (expert opinion). Mayo Clinic, Rochester, Minn. May 20, 2013.