Projects/Diffusion/2007 Project Week Contrasting Tractography Measures/Acquisition Parameters

From NAMIC Wiki
Revision as of 20:46, 24 January 2008 by Spujol (talk | contribs)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search
Home < Projects < Diffusion < 2007 Project Week Contrasting Tractography Measures < Acquisition Parameters

DTI data:

3 Tesla Dataset

  • 3 Tesla GE system was used to acquire data (General Electric Medical Systems, Milwaukee, WI)
  • We used Echo Planar Imaging (EPI) DTI Tensor acquisiton with double echo option enabled, in order to reduce eddy-current related distortions.
  • 8 Channel Head Coil was used to reduce the impact of EPI spatial distortions, and ASSET (Array Spatial Sensitivity Encoding Techniques, GE) with a SENSE-factor (speed-up) of 2 was used.
  • Acquisition parameters were as follows: 51 directions with b=700, 8 baseline scans with b=0, TR 17000 ms, TE 78 ms, FOV 24 cm, 144 x 144 encoding steps, 1.7 mm slice thickness. The total scan time for the sequence was 17 minutes.

MIND Dataset

  • 1.5 T Siemens using 8-Channel Coil
  • 60 gradient directions, 10 baselines, b = 700.
  • TR = 8900 ms, TE = 80 ms, FOV = 256 mm, 2.0 mm voxel size, 2 mm slice thickness, 128 x 128 x 64 matrix size.
  • Scan time: 10:32 min


Return to Contrasting Tractography Project Page