The development of in vivo biomarkers sensitive to myelin disruption represents a major clinical need to be able to monitor the demyelination processes as well as the effect of remyelinating therapies in multiple sclerosis. The investigators recently proposed a technique, derived from the conventional magnetisation transfer (MT): inhomogeneous Magnetisation Transfer (ihMT). In preliminary studies, this simple-to-implement and robust technique has shown great sensitivity for evaluating the demyelination processes. The goal of the project is to evaluate the ability of ihMT to measure and describe the spontaneous demyelination and remyelination processes involved in active lesions in a population of patients with MS at the the disease onset.
The development of in vivo biomarkers sensitive to myelin disruption (demyelination and remyelination) represents a major clinical need to be able to monitor the demyelination processes as well as the effect of remyelinating therapies in multiple sclerosis. The investigators recently proposed a technique, derived from the conventional magnetisation transfer (MT): inhomogeneous Magnetisation Transfer (ihMT). In preliminary studies, this simple-to-implement and robust technique has shown great sensitivity for evaluating the demyelination processes. The goal of the project is to evaluate the ability of ihMT to measure and describe the spontaneous demyelination and remyelination processes involved in active lesions in a population of patients with MS at the the disease onset.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
OTHER
Masking
NONE
Enrollment
85
robust technique has shown great sensitivity for evaluating the demyelination processes using MRI at 1.5T
robust technique has shown great sensitivity for evaluating the demyelination processes using MRI at 3T
Assistance Publique Des Hotipaux de Marseille
Marseille, PACA, France
RECRUITINGihMTR ratio at 1.5TMRI
ihMT 3D technique at 1.5TMRI on active lesions with baseline measurements
Time frame: 1 year
Magnetic transfert (MT) at 1.5TMRI
relative signal variations of the conventional magnetization transfer (MT)
Time frame: 1 year
Myelin water fraction at 1.5TMRI
myelin water fraction (MWF), an MRI biomarker of myelin, in new MS lesions
Time frame: 1 year
ihMTR ratio at 3TMRI
Relative variations in ihMTR ratio measured at 3T will be compared to those measured at 1.5T at the same points in time to opmtimize 3D ihMT technique at 3TMRI
Time frame: 1 year
Evaluate the predictive value of ihMT
Evaluate the predictive value of the measured dynamics with respect to the final progression of the lesions
Time frame: 1 year
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