[Eye movements: initial dynamic approach in high resolution magnetic resonance imaging].
New MR softwares allow a dynamic display of different fonctionnal anatomical regions. This work is a first attempt to visualize the ocular movements. A video tape constitute the support of our results. Technically, the work is performed on a Signa 1,5 T GE CGR System. During each MR acquisition, the subject is asked to fix his gaze successively on each spot of a scale set inside the bore of the magnet. Twenty four images are performed to show the entire lateral course of the globes. The examination time is about half an hour. The video display show the movements of agonist and antagonist muscles, the eyeballs and the optic nerves displacements, in the axial neuro-ocular plane (NOP). Different clinical applications of this new method are discussed (muscular surgery...).
Unité IRM-Service de Neuroradiologie, Paris.
M H
MH
Carteret
J
J
Maintenant
E A
EA
Cabanis
M T
MT
Iba-Zizen
A
A
Lopez
M
M
Thibierge
J
J
Tamraz
C
C
Stoffels
D005133:Eye Movements; D006801:Humans; D007908:Lens, Crystalline; D008279:Magnetic Resonance Imaging; D009801:Oculomotor Muscles; D009898:Optic Disk; D009900:Optic Nerve
Mouvements oculaires: première approche dynamique en imagerie par résonance magnétique (I.R.M.) de haute résolution.