Contraindications to MRI procedure
The principal contraindications of the MRI procedure are mostly related to the presence of metallic implants in a patient. The risks of MRI scans increase with the used field strength. In general, implants are becoming increasingly MR safe and an individual evaluation is carried out for each case.
# Intra-orbital metal fragments
# Any electrically, magnetically or mechanically activated implants (including cardiac pacemakers, biostimulators, neurostimulators, cochlear implants, and hearing aids).
-other pacemakers, e.g. for the carotid sinus
-insulin pumps and nerve stimulators
-lead wires or similar wires (MRI Safety risk)
-prosthetic heart valves (in high fields, if dehiscence is suspected)
-haemostatic clips (body)
-non-ferromagnetic stapedial implants
Absolute Contraindications for the MRI scan:
# Intracranial aneurysm clips (Unless the referring physician is certain that it is made of nonferromagnetic material such as titanium).# Intra-orbital metal fragments
# Any electrically, magnetically or mechanically activated implants (including cardiac pacemakers, biostimulators, neurostimulators, cochlear implants, and hearing aids).
Relative Contraindications for the MRI scan:
-cochlear implants-other pacemakers, e.g. for the carotid sinus
-insulin pumps and nerve stimulators
-lead wires or similar wires (MRI Safety risk)
-prosthetic heart valves (in high fields, if dehiscence is suspected)
-haemostatic clips (body)
-non-ferromagnetic stapedial implants
Labels: RADIOLOGY
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