[Mristudio-users] a question about gradient table in dpf file

[Hangyi Jiang]

Q: I am wondering if it's fine to use two b0 images in the gradient table in the dpf file, Is DTIStudio able to recoganize and use both b0 images?
A:  yes. multiple B0s are just fine.

Q: is there a way to specify b-value for the b0 images (e.g., although very low, it may be 10 or 50, instead of 0)?
A: yes, you can define the gradient table in this way: #: x, y, z, b-value.  for example:

  0: 0,0,0, 30
  1:   160,   160,     0, 800
  2:     0,  -160,   160, 800
  3:  -160,     0,  -160, 800
....

and more, you can use multiple b-values for your dataset, for  example: 
  0: 0,0,0, 30
  1:   160,   160,     0, 800
  2:     0,  -160,   160, 800
  3:  -160,     0,  -160, 800
....
  7: 0,0,0, 30
  8:   160,   160,     0, 1600
  9:     0,  -160,   160, 1600


regards,

hangyi






________________________________________
From: mristudio-users-bounces at mristudio.org [mristudio-users-bounces at mristudio.org] On Behalf Of Yi Jiang [yj3 at duke.edu]
Sent: Monday, December 14, 2009 4:25 PM
To: DTI Studio, ROI Editor,     Landmarker Questions/Support
Subject: [Mristudio-users] a question about gradient table in dpf file

Hello, I am wondering if it's fine to use two b0 images in the gradient table in the dpf file, such as following:

        Begin_Of_Gradient_Table
  0: 0,0,0
  1:   160,   160,     0
  2:     0,  -160,   160
  3:  -160,     0,  -160
  4:   160,  -160,     0
  5:     0,   160,   160
  6:   160,     0,  -160
  7: 0,0,0
  8:  -160,  -160,     0
  9:     0,   160,  -160
  10:  160,     0,   160
  11: -160,   160,     0
  12:    0,  -160,  -160
  13: -160,     0,   160

        End_Of_Gradient_Table


Is DTIStudio able to recoganize and use both b0 images?

Moreover, is there a way to specify b-value for the b0 images (e.g., although very low, it may be 10 or 50, instead of 0)?

Thank you very much!

Best,
Yi