[Study of the internal canthus with magnetic resonance imaging]. / Etude du canthus interne par imagerie par résonance magnétique.

In oculoplastic surgery, the internal canthus is a particular feature of great importance. An analysis has been carried out with 10 MRI tests of the internal canthi and the authors will outline the major difficulties, before detailing a protocol which would enable further studies of pathological canthi.

The locked-in syndrome: a review and presentation of two chronic cases.

The locked-in syndrome (LIS) is a state of an upper motor neurone quadriplegia involving the cranial nerve pairs with usually a lateral gaze palsy, paralytic mutism, full consciousness and awareness by the patient of his environment. A historical presentation of the LIS is given as well as a short description of the clinicoanatomic lesion causing LIS. The usual cause is vascular and corresponds to a pontine infarction due to an obstruction of the basilar artery but other lesions in the brainstem can also be the cause. Non-vascular aetiologies, especially traumatic, are reviewed. The use of electroencephalography (EEG), brain auditory evoked potentials (BAEP) and somesthesic evoked potentials (SEP) are discussed as well as the use in the acute stage of computed tomography (CT), angiography, and magnetic resonance imagery (MRI). The last method may show well delineated ischaemic lesions some time after the event. The communication disability is probably the most difficult to overcome. Two cases of LIS are presented.

[Post-traumatic L5-S1 root avulsion. Myelographic and x-ray computed tomographic study. Apropos of a case. Review of the literature]. / Avulsion radiculaire L5-S1 post-traumatique. Exploration myélographique et tomodensitométrique. A propos d'un cas. Revue de la littérature.

A patient presented an avulsion of left L5-S1 roots, with S1 meningocele, following a road accident. Saccoradiculography and CT scan imaging, even without contrast, allowed identification of total lesion in a suggestive clinical context. The characters of the CT scan images are emphasized. Images showed also the presence of pseudo-meningoceles and absence of roots.

[An accessory for producing direct coronal sections in craniocervical x-ray computed tomography]. / Accessoire pour la réalisation de coupes coronales directes en scanographie cranio-cervicale.

An accessory piece of equipment adapted for use with the CE 10 000 C.G.R. allows simple, reliable completion of craniocervical coronal sections.