Guillaume Calmon

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This article presents a technique to automatically measure changes in the volume of a structure of interest in successive 3D magnetic resonance (MR) images and its application in the study of the brain and lateral cerebral ventricles. The only manual step is a segmentation of the structure of interest in the first image. The analysis comprises, first,(More)
Evaluating precisely the temporal variations of lesion volumes is very important for at least three types of practical applications: pharmaceutical trials, decision making for drug treatment or surgery, and patient follow-up. In this paper we present a volumetric analysis technique, combining precise rigid registration of three-dimensional (3-D)(More)
Pathology and magnetic resonance imaging (MRI) studies have provided evidence of widespread axonal loss and reductions of cerebral and spinal cord volume in multiple sclerosis (MS). Atrophy measures on MRI may be a useful surrogate marker of worsening disability in MS, but the published studies are of relatively short duration. Change in brain volume(More)
Few institutions use MRI perfusion without contrast injection called arterial spins labeling (ASL) routinely in clinical setting. After general considerations concerning the different ASL techniques and quantitative issues, we will detail a pulsed sequence that can be used on a clinical 1.5-T MR unit. We will discuss and illustrate the use of ASL in tumoral(More)
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