Manipulation under anaesthetic of children's fractures : use of the image intensifier reduces radiation exposure to patients and theatre personnel.
During simulated manipulation of children's forearm fractures, levels of scattered radiation from both plain radiographs and an image intensifier in different modes were measured at various sites on the surgeon, anaesthetist, radiographer, and patient both with and without recommended shielding.
By using fluoroscopy in the pulsed screening mode but allowing only single pulses to occur, radiation levels could be substantially reduced to the eye, thyroid, and gonads of all those exposed.
The radiographer and the anaesthetist were so far from the source and guarded by various pieces of equipment that levels were almost unrecordable.
Effective dose equivalent for the surgeon using pulsed mode, based on circa six pulses per manipulation, during 100 manipulations per year, would equate to 1 Sv even in the unshielded state (<0.1 Sv shielded), which is q1/1,000 of background radiation at sea level.
Because the current dose limit is 50 mSv (50,000 Sv) per year for employees, we are many orders of magnitude in the safety zone.
Mots-clés Pascal : Radiographie, Intensificateur image, Enfant, Homme, Fracture, Avant bras, Modèle, Exploration, Personnel sanitaire, Exposition professionnelle, Rayonnement ionisant, Médecine travail, Rayon X, Os, Membre supérieur, Radiodiagnostic, Exploration radiologique, Système ostéoarticulaire pathologie, Traumatisme
Mots-clés Pascal anglais : Radiography, Image intensifier, Child, Human, Fracture, Forearm, Models, Exploration, Health staff, Occupational exposure, Ionizing radiation, Occupational medicine, X ray, Bone, Upper limb, Radiodiagnosis, Radiologic investigation, Diseases of the osteoarticular system, Trauma
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 96-0142642
Code Inist : 002B24A07. Création : 199608.