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Avatar universal

I have a 25 mm Onex Bileaflet in 2005 is it safe to hav an MRI

is it safe to have an MRI?
3 Responses
973741 tn?1342346373
So, no one answered you.  I would say that you need to inquire with the facility that you'd like to get the MRI done at.  I have read a study that says you can but please verify.  Let us know what you find out.
20748650 tn?1521035811
What she said ^

I work in the field of cardiology and I can’t even begin to answer a question like this off the top of my head.

You need to ask a Structural Heart Specialist or CT surgeon for clearance.
Avatar universal
Whenever you have surgery where a device was implanted in your body, you should have received a product information card with all the details (make and model, serial and lot numbers, etc.). This card comes from the manufacturer of the device and will state if your device is MRI safe, MRI conditional, or not MRI safe. Save the card!

If you no longer have the card, you can contact the hospital where the surgery was performed to request a copy of the op note and then present this to facility where you plan to have your imaging for clearance.

In general, the most comprehensive site/database for checking if devices are MRI safe is www.mrisafety.com. You can search the list to find your device. For example, you can search for On-X Prosthetic Heart Valve as follows: http://www.mrisafety.com/TMDL_list.php?qs=On-X%20Prosthetic%20Heart%20Valve. This query reveals that it is MRI conditional, which means that you can get the MRI as long as certain parameters are followed:

-Static magnetic field of 3-Tesla or less
-Maximum spatial gradient magnetic field of 720-Gauss/cm (a higher value for the spatial gradient magnetic field may apply if properly calculated).
-Maximum MR system reported whole-body-averaged specific absorption rate (SAR) of 2-W/kg for 15 minutes of scanning (per pulse sequence).

Alternatively, you can go directly to the manufacturer's web site to confirm this:
https://www.cryolife.com/products/on-x-heart-valves/mri-safety/
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