Multiple Sclerosis Community
3T Safe for Vena Cava Filters?
About This Community:

Our Patient-to-Patient MS Forum is where you can communicate with other people who share your interest in Multiple Sclerosis. This forum is not monitored by medical professionals.

Font Size:
A
A
A
Background:
Blank
Blank
Blank
Blank Blank

3T Safe for Vena Cava Filters?

Can someone help me look online for info on whether or not it is considered "safe" to have an MRI on a 3T if you have a green filled filter/ (it's located in my vena cava)? My filter is made of titanium and can be temporary or permanent. I want to be prepared next time if and when I decide to pursue this thing. I did manage to look some things up and found that it is considered safe on a 3T but nothing bigger. I just don't know how reliable these sources are. If it's true that I could then... I got lied to and I hate that.
Related Discussions
Avatar_f_tn
Hi Slightlybroken,

I found this:

Static Magnetic Fields

Most currently used clinical MR scanners are 1.5 to 3 tesla (T), which corresponds to 30 000 to 60 000 times the strength of the Earth’s magnetic field. The greatest risk from the main magnetic field is attraction of a ferromagnetic object into the scanner.

For the purposes of this statement, the term "ferromagnetic" is used to denote a substance that experiences an attractive force in the presence of a magnetic field. As a result of ferromagnetic interactions, a device may be moved, rotated, dislodged, or accelerated toward the magnet.

Thus, a ferromagnetic object might be accelerated toward the magnet at dangerously high velocities and/or with dangerously high forces, creating a "projectile effect" that could lead to significant patient injury or damage to the MR system.

Device function may also be altered or negated as a result of interactions with the strong static magnetic fields. Most, but importantly not all, currently implanted cardiovascular devices are either nonferromagnetic or weakly ferromagnetic. The higher the static magnetic field of the MR system, the greater the resultant ferromagnetic forces on weakly or overtly ferromagnetic materials.

Thus, findings from ex vivo studies at fields of 1.5 T or lower may not necessarily apply to imaging of devices at higher field strengths (eg, 3 T and higher), which produce significantly greater forces. For devices in which the ferromagnetism of the device is a significant safety concern, consideration should be given to performing the study at the lowest field strength available to reduce whatever ferromagnetic risk might be present.

Finally, all healthcare professionals are reminded that currently used MR scanners are typically superconducting and thus are always "on."
____________

The entire article is at:
http://www.circ.  ahajournals.   org/cgi/content/full/116/24/2878 (remove spaces)

Hope this helps a little.  I will see what else I might can find tomorrow.

Take care,
doni
Blank
Post a Comment
To
Blank
Weight Tracker
Weight Tracker
Start Tracking Now
Multiple Sclerosis Community Resources
RSS Expert Activity
233488_tn?1310696703
Blank
New Cannabis Article from NORTH Mag...
Jul 20 by John C Hagan III, MD, FACS, FAAOBlank
242532_tn?1269553979
Blank
3 Reasons Why You are Still Binge E...
Jul 14 by Roger Gould, M.D.Blank
242532_tn?1269553979
Blank
Emotional Eating: What Your Closet ...
Jul 09 by Roger Gould, M.D.Blank
Top Neurology Answerers
987762_tn?1331031553
Blank
supermum_ms
Australia
667078_tn?1316004535
Blank
HVAC
Durham, NC
Avatar_f_tn
Blank
SarahL2491
Alagash, ME
1831849_tn?1383231992
Blank
kwarendorf
Great Neck, NY
147426_tn?1317269232
Blank
Quixotic1
Washougal, WA
Avatar_f_tn
Blank
essdipity