Objectives-To explore the use of 99technetiumm-hexamethyl propylene amine oxime single photon computed tomography (HMPAO-SPECT) of the brain as a means of detecting nervous tissue damage in divers and to determine if there is any correlation between brain image and a diver's history of diving or decompression illness (DCI).
Methods-28 commercial divers with a history of DCI, 26 divers with no history of DCI, and 19 non-diving controls were examined with brain HMPAO-SPECT.
Results were classified by observer assessment as normal (I) or as a pattern variants (II-V).
The brain images of a subgroup of these divers (n=44) and the controls (n=17) were further analysed with a first order texture analysis technique based on a grey level histogram.
-15 of 54 commercial divers (28%) were visually assessed as having HMPAO-SPECT images outside normal limits compared with 15.8% in appropriately identified non-diver control subjects. 18% of divers with a history of DCI were classified as having a pattern different from the normal image compared with 38% with no history of DCI.
No association was established between the presence of a pattern variant from the normal image and history of DCI, diving, or other previous possible neurological insult.
On texture analysis of the brain images, divers had a significantly lower mean grey level (MGL) than non-divers. (...)
Mots-clés Pascal : Tomoscintigraphie, Photon, Exploration radioisotopique, Antécédent, Homme, Plongée, Diagnostic, Décompression maladie, Barotraumatisme, Traumatisme, Activité professionnelle, Médecine travail, Exposition professionnelle, Agent physique, Système nerveux pathologie, Encéphale
Mots-clés Pascal anglais : Emission tomography, Photon, Radionuclide study, Antecedent, Human, Diving, Diagnosis, Decompression sickness, Barotrauma, Trauma, Professional activity, Occupational medicine, Occupational exposure, Physical agent, Nervous system diseases, Brain (vertebrata)
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 97-0246637
Code Inist : 002B16M. Création : 11/06/1997.