[Are auditory prostheses a contraindication to magnetic resonance imaging?].
Prior to the use of nuclear magnetic resonance imaging (NMRI) in patients with metallic ossicular prostheses their compatibility must be investigated with the intense magnetic fields generated by NMRI. Implanted auditory prostheses are an absolute contraindication to NMRI, but an experimental study of its possible interaction with metallic stapedial prostheses has shown absence of their displacement. The artefact induced may alter images of middle ear but do not affect internal auditory canal. Nevertheless, manufacturers should conduct tests of magnetism of prostheses before they are passed as satisfactory.
Service d'O.R.L. de l'Hôpital Cochin, Paris.
P
P
Corlieu
D
D
Doyon
M
M
Bagot d'Arc
B
B
Aubert
N
N
Aubert
D003054:Cochlear Implants; D006801:Humans; D008279:Magnetic Resonance Imaging
Les prothèses auditives sont-elles une contre-indication à l'I.R.M.?