[Limits and prospects of gamma angioencephalography]

Among the informations that can be obtained from the gamma-angioencephalography, the two major aspects are limiting high resolution diagnosis:--on one hand, unspecificity of radio-active molecules for the different lesions,--on the other hand, insufficiency of detection possibilities and scintigraphy enhancement. On this last field fast sequential acquistions technics, data's filtering functional imaging bring much better inflamations. Recently, the new detectors with a high resolution power allow these technics to give to the physicians functional datas that can not be obtained with cumputerized tomography.