[Mristudio-users] AIR files

[Yi Jiang]

Hello Xin,

 

The AIR files work well. Thank you so much for your help!

 

When I tried to do single channel LDDMM, however, I kept getting an error message:

 

Cannot upload this file:

50e2d839a4e9cba6a1d6ce400313c689.zip

 

My image size is 512x256x256 for template or subject image. I have transferred them into byte format and I kept all the default settings of LDDMM. Is that because my image is too big? Or a firewall? I have not tried the multi-channel LDDMM, though.

 

I have another two questions:

 

1. if I have a template image and a subject image and I want to register these two by LDDMM eventually, 1. should I use LDDMM to register these two directly or 2. should I use AIR linear to affine transform them first, and then LDDMM the updated subject image? In the 2nd case, I need to reorient tensors twice, once by the AIR transformation matrix and once by the LDDMM transformation matrix, right?

 

I am asking this question because for some other registration software I have used, it seems the elastic transformation works better after affine registering the images first.

 

Or maybe LDDMM covers rigid and affine transformation well already so we can do #1?

 

2. There is no online manual for the nonlinear AIR. Do you usually use that? Can Landmarker load in the resulted non-linear AIR transformation and reorient tensors accordingly? How does the nonlinear AIR compensate/compare with LDDMM?

 

Thank you very much!

 

Best,

Yi

 

 

  ----- Original Message ----- 
  From: Xin Li 
  To: Yi Jiang 
  Cc: Susumu Mori 
  Sent: Tuesday, July 07, 2009 5:00 PM
  Subject: AIR files


  Yi, 

  The attachment includes all the AIR files required by Landmarker.

  Regards,

  Xin
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