Soutenance de thèse de Nidiyare Hevia
Prediction du potentiel de croissance des infarctus cerebraux par traitement d’image de l’IRM de diffusion
Membres du jury :
We introduce a new approach to the prediction of the final infarct growth in human acute ischemic stroke based on image analysis of the Apparent Diffusion Coefficient (ADC) MR maps acquired in the acute stage. The ADC maps are likely to reveal brain regions belonging to the ischemic penumbra, that is, areas that will certainly may be affected by the infarction in the following next few hours. In a context where “time is brain”, and contrarily to the most developed – though still-debated – perfusion-diffusion mismatch approach, the ADC MR sequences are fast to acquire and do not necessitate injection of a contrast agent. Image analysis consists of the segmentation of the ischemic penumbra using a fast 3D region-growing infarct approach.