Correct Answer - C
Answer- C. Ryle's tube
Contraindications for MRI
A) Absolute
Electronically, magnetically, and mechanically activated implants.
Ferromagnetic or electronically operated active devices like
automatic cardioverter defibrillators.
Cardiac pacemaker
Metallic splinters in the eye.
Ferromagnetic haemostatic clips in the CNS.
B) Relative contraindications
Cochlear implants
Prosthetic heart valves
Other pacemakers, e.g., for Carotid sinus
Haemostatic clips
Insulin pumps and nerve stimulators
Non-ferromagentic stapedial implants
Lead wires or similar wires
Women with a first - trimester pregnancy