MRI safety of devices and implants

This is a survey of the safety of medical devices and implants in magnetic resonance imaging (MRI).
Information adapted from Wikipedia, 2009 FDA guidelines, and TrueLearn.
ADDITIONAL TAGS:
2009 FDA labeling system:
MRI safe: poses no hazard in all MRI environments
MRI conditional: safe under defined MRI environments; if the model number or name is known, conditions can be found at MRIsafety.com or on the manufacturer's website
MRI unsafe: not safe in any MRI environments.
Device/Implant
Safety Comments
Arterial stents, coils, clips
After six to eight weeks, they become embedded in the arteries and are MRI safe
Bare metal coronary stents are considered MRI safe immediately after placement
Breast implants/tissue expanders
Most are rated MRI safe
Some do have metallic components or magnetic injection site guides, and safety should be verified prior to imaging
Bullets/Shrapnel/Metallic Fragments
MRI is contraindicated if an object is near vital structures (eye, heart, arteries)
Prior radiographic imaging should be reviewed to assess the location; if radiographic imaging is unavailable, consider using radiography or computed tomography to assess the location
Cardiac valves
Rated as MRI safe or conditional
Cardiovascular implantable electronic device (pacemakers and/or implantable cardioverter-defibrillators)
A cardiologist should be involved before, during, and after the MRI
If an object is a legacy device, it is considered MRI unsafe
Most modern CIEDs are MRI conditional
Cerebrospinal fluid shunt
Typically rated as MRI safe or conditional
Cochlear implants
The battery should be removed, and implant wrapping scheduling should occur before MRI is performed
Contraceptive devices
Most are rated as MRI safe or conditional
Copper or steel (commonly used in China but can cause artifact) intrauterine devices have had no adverse effects
Subdermal implants are MRI safe
Dental implants
Detachable implants should be removed
Permanent implants tend to be ferromagnetic but do not pose harm due to being securely fixed to the bone or surrounding teeth
Drug infusion pumps/patches
Should be removed because of the risk of malfunction and thermal injury
IVC filters
If MRI is required, it should ideally be performed at least 8 weeks after placement to allow for embedding in the IVC
Intracranial aneurysm clip
Identification of the clip is required to prevent injury or death
Jewelry
All metallic jewelry should be removed
Neurostimulators
Rated as MRI conditional or unsafe
Orthopedic implants
Most are MRI conditional and consist of titanium which is not ferromagnetic
Screws and anchors may be ferromagnetic but are secured in the bone and do not pose a hazard but will cause imaging artifact
Penile prostheses
Rated as MRI safe or conditional except for duraphase and omniphase, which are MRI-unsafe bc risk of displacement or torque injury
Permanent makeup and tattoos
Typically do not cause issues with MRI. Ferromagnetic ink can cause imaging artifacts. Dark or curved patterns can cause minor burning → treat with cold compress
Surgical skin staples
After six to eight weeks, granulomas form, and MRI can be performed
Urinary catheters
MRI safe because they are composed of plastic
Vascular ports and intravenous catheters
Rated as MRI safe or conditional

[@EricPham-gr8pg]

The trick is don't use electromagnetic but must use permanent magnet and use gravity and magnet lense use gridline , distance , and optic lense. The problem should kept low tesla or blood rush up like pump