Diffusion MRI measured at multiple b-values

Romain, Valabregue

Diffusion MRI measured at multiple b-values

dc.contributor.author	Romain, Valabregue
dc.date.accessioned	2015-07-15T15:40:51Z
dc.date.available	2015-07-15T15:40:51Z
dc.date.issued	2015-07-13
dc.description	Data were acquired on a Siemens 3T PRISMA MRI (maximum gradient strength of 80 mT/m) using a 64 channel coil, at CENIR, ICM (Paris). The multiband epi2ddiff sequence from Minneapolis (http://www.cmrr.umn.edu/multiband/) was used with a multiband factor of 3, TR=3s TE=74ms flip angle=72 voxel size=2mm isotropic FOV=208208144 bandwidth=2090, monopolar acquisition scheme with a \delta of 15.7ms and a \Delta of 36.5ms (spoiler b-value 2.6 s/mm^2). For b=200, 400, 8 directions were used for each b-value. For other b-values, 90 directions for each b-value where chosen with http://www.emmanuelcaruyer.com/q-space-sampling.php so that we have different direction for each b-value. A b=0 image was interleaved every 8 or 9 directions. For each b-value you will find : the raw data (4D_dwi_xxx.nii.gz), the data preprocessed with topup and eddy tools from FSL (4D_dwi_eddycor_xxx.nii.gz), the directions and b-values in FSL format (bvals bvecs) and a .json file containing dicom metadata of each acquisition.	en_US
dc.description.abstract	Diffusion MRI at multiple b-values (200, 400, 1000, 2000, 3000) was collected on a 3T Siemens Prisma MRI instrument in a single healthy individual.	en_US
dc.identifier.uri	http://hdl.handle.net/1773/33311
dc.subject	MRI, diffusion, brain	en_US
dc.title	Diffusion MRI measured at multiple b-values	en_US
dc.type	Dataset	en_US