Place du doppler transcranien (DTC) dans la drépanocytose

Abstract

Neurovascular complications in sickle cell disease are frequent and early and are very serious
the fate of these children either through acute and noisy clinical accidents (most often ischemic stroke) or,
more discreetly, through cognitive disorders or learning disabilities. Medical imaging plays a role
central in the screening of these neurological complications and among the range of imaging techniques, transcranial ultrasound is an essential step for the diagnosis and especially the prevention of stenosis of
arteries of the Willis polygon. Transcranial Doppler, which is the subject of recommendations from HAS in
France and on behalf of the NIH in the United States, by researching an acceleration of circulatory speeds in the
within one or more arteries in the base of the skull to determine the risk of stroke in asymptomatic children.
After a brief reminder of the pathophysiology of the lesions, we will describe our examination technique, emphasizing
on certain specific points and will detail the normal and pathological results as well as the place of Doppler
transcranial in the annual monitoring of these children.