Synaptic Plasticity Imaging With Diffusion MRI
|ClinicalTrials.gov Identifier: NCT01686516|
Recruitment Status : Unknown
Verified September 2012 by Institut National de la Santé Et de la Recherche Médicale, France.
Recruitment status was: Recruiting
First Posted : September 18, 2012
Last Update Posted : September 18, 2012
|Condition or disease|
This study is devoted to explore brain plasticity by 2 modes of diffusion weighted imaging (DWI) of the brain :
- functional imaging using DWI and BOLD
- anatomical studies using DWI Theses DWI exams use high b-factor to sample tissue microstructure/metabolism. To correlated these DWI changes with anatomical ones, we used anatomical imaging like T1 maps and susceptibility-based maps.
First, the relatively new technique of diffusion functional magnetic Resonance (DfMRI) was explored to obtain activation of brain following visual stimulations. These modality was compared to BOLD and anatomical venography.
The DWI exams for anatomical (tractography) used both high angular resolution directional diffusion encoding (18 directions) and high b-values (as high as b=12 000 s/mm²) to obtain precise knowledge about tissue microstructure.
Study was approved by the National French Institute of Health and by french organism for biomedical studies (AFFSAPS). Study involve 35 subjects, with 5 additional subjects for eventual rejection because of ineligibility criterion, and compare 15 young (20-30 years) to aged healthy people (60-80 years).
Then, anatomical studies are devoted to obtain microstructures information about brain areas that are changed with age, and to validate fully the feasibility of the DfMRI approach.
|Study Type :||Observational|
|Estimated Enrollment :||35 participants|
|Official Title:||Methodological Study of Synaptic Plasticity Imaging With Diffusion MRI|
|Study Start Date :||June 2011|
|Estimated Primary Completion Date :||December 2012|
|Estimated Study Completion Date :||December 2012|
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01686516
|Contact: Renaud NICOLAS, PhD||(+33)7 77 05 76 email@example.com|
|Inserm U 825||Recruiting|
|Toulouse, France, 31059|
|Contact: Renaud NICOLAS, PhD (+33)7 77 05 76 75 firstname.lastname@example.org|