title: New ratios for the detection and classification of CJD in multisequence MRI of the brain.
abstract: We present a method for the analysis of deep grey brain nuclei for accurate detection of human spongiform encephalopathy in multisequence MRI of the brain. We employ T1, T2 and FLAIR-T2 MR sequences for the detection of intensity deviations in the internal nuclei. The MR data are registered to a probabilistic atlas and normalised in intensity prior to the segmentation of hyperintensities using a foveal model. Anatomical data from a segmented atlas are employed to refine the registration and remove false positives. The results are robust over the patient data and in accordance to the clinical ground truth. Our method further allows the quantification of intensity distributions in basal ganglia. sCJD patient FLAIR images are classified with a more significant hypersignal in caudate nuclei (10/10) and putamen (6/10) than in thalami. Defining normalised MRI measures of the intensity relations between the internal grey nuclei of patients, we robustly differentiate sCJD and variant CJD (vCJD) patients, as an attempt towards the automatic detection and classification of human spongiform encephalopathies.
authors: EPIDAURE Research Group, INRIA Sophia Antipolis, France. mglin@deas.harvard.edu
authors: Marius George
authors: MG
authors: Linguraru
authors: Nicholas
authors: N
authors: Ayache
authors: Miguel Angel
authors: MA
authors: González Ballester
authors: Eric
authors: E
authors: Bardinet
authors: Damien
authors: D
authors: Galanaud
authors: Stéphane
authors: S
authors: Haïk
authors: Baptiste
authors: B
authors: Faucheux
authors: Patrick
authors: P
authors: Cozzone
authors: Didier
authors: D
authors: Dormont
authors: Jean-Philippe
authors: JP
authors: Brandel