Can you get an MRI if you have metal in your body?
If you have metal or electronic devices in your body such as artificial joints or heart valves, a pacemaker or rods, plates or screws holding bones in place, be sure to tell the technician. Metal may interfere with the magnetic field used to create an MRI image and can cause a safety hazard.
No, Open MRI imaging will not cause fillings in your teeth, if in proper condition, to dislodge or come out. The metal in most fillings is not affected by the MRI system's magnetic field. However, the fillings may cause some distortion of the images if you are having a scan of your neck, brain or facial area.
- Since MRI scans depend on the water or fluid content in the body tissue, you can see swelling and inflammation on these images. For instance, tendonitis will show up on an MR scan because there's usually fluid and swelling that goes along with it.
- Some cosmetics contain metals that can interact with MRI magnets, so on the day of the MRI don't wear makeup or nail polish. Also, minimize hair products and forgo antiperspirants and sunscreens, which contain metals, just to be safe. Having an MRI? You may need an anti-anxiety drug.
- Their study examined the safety of retained bullets in MRI scanners. Earlier research has suggested that bullets lodged in patients are generally safe in 1.5-tesla MRI scanners, but it is unknown if they are safe in 3- and 7-tesla scanners.
MRI Compatible Metals
- Titanium. Orthopedic surgeons favor titanium implants for their strength and compatibility with body tissues.
- Cobalt-Chromium. Though cobalt has magnetic properties, implants such as coronary stents made of cobalt-chromium alloy have tested safe during an MRI.
- Stainless Steel.
- Studies done on this material using surgical staples made of the same steel produced neither heat, nor movement when put in the MRI. In other words, you're good to go. This grade of titanium is commonly used in dental implants and those implants are deemed safe for the MRI.
- No, Open MRI imaging will not cause fillings in your teeth, if in proper condition, to dislodge or come out. The metal in most fillings is not affected by the MRI system's magnetic field. However, the fillings may cause some distortion of the images if you are having a scan of your neck, brain or facial area.
- Like X-rays and PET scans, CT scans use ionizing radiation, which can damage DNA and cause cancer. Two other imaging technologies, MRI scans and ultrasound, do not use radiation. CTs are used for a plethora of reasons, among them finding kidney stones, evaluating chest pain and detecting tumors or other abnormalities.
If you have any metal on or in your body, an MRI can harm you. Even small amounts that will not harm your body can distort the MRI picture. In most cases, surgical staples, clips, plates, pins, and screws are not a risk during MRI scans if they have been in place for more than 4 to 6 weeks.
- Can I have an MRI after spinal fusion surgery? Most people who have metal rods and screws inserted during spinal surgery can have a magnetic resonance imaging (MRI) scan. MRI scanners use a large magnet. If there is loose metal in the body, it can move during the scan.
- That's why 316LVM is the gold standard for steel implants. But the takeaway is that neither of these steel grades should cause any issue with the MRI except for artifacts. Grade 5 titanium. This grade of titanium is commonly used in dental implants and those implants are deemed safe for the MRI.
- Implants made from iron, cobalt, chromium, titanium, and tantalum are commonly used (see the images below). Clinical studies have demonstrated that alloys made from these metals can be used safely and effectively in the manufacturing of orthopedic implants that are left in vivo for extended periods.
Updated: 3rd October 2019