Thank you, Daniel！
I am interested in the activities of different insular subregions recently. I find the available atlases of insular subregions on the Internet are all in MNI space. For example, The atlases which include 5 subregions provided in this site (Faillenot, I., Heckemann, R. A., Frot, M., & Hammers, A. (2017). Macroanatomy and 3D probabilistic atlas of the human insula. NeuroImage, 150, 88-98.) are produced in MNI152 space. But all my previous processings were done in Talairach space and TT_N27 was used as the template in AFNI. So I need to transform these atlases to Talairach space firstly if necessary.
But I have some questions before that:

1) I know it is not accurate at all no matter what kind of transformation between MNI and Talairach is performed. So do you know any atlas in TT_N27 space which includes several subregions of insular?

2) If the insular atlas in Talairach space does not exist, the transformation is ineluctability.

And I have tried to do this:
One subregion in the atlases mentioned above was transformed into Talairach space:

3dWarp -mni2tta -NN -prefix Transformed_dset probmap-gm-r20-insula_posterior_long_gyrus_L.nii
++ 3dWarp: AFNI version=AFNI_17.0.09 (Aug  7 2009) [64-bit]
++ Authored by: RW Cox

And a dateset was generated:

 ls Transformed_dset*
Transformed_dset+orig.BRIK  Transformed_dset+orig.HEAD

But the generated daset is still with the suffix of '+orig'. And it is in the space of TLRC:

3dinfo Transformed_dset*
++ 3dinfo: AFNI version=AFNI_17.0.09 (Aug  7 2009) [64-bit]
Dataset File:    Transformed_dset+orig
Identifier Code: XYZ_YmftSLU67NPk50y5huwi5w  Creation Date: Fri Mar  2 04:07:20 2018
Template Space:  TLRC
Dataset Type:    Anat Bucket (-abuc)
Byte Order:      LSB_FIRST [this CPU native = LSB_FIRST]
Storage Mode:    BRIK
Storage Space:   18,515,952 (19 million [mega]) bytes
Geometry String: "MATRIX(1,0,0,-78,0,-1,0,112,0,0,1,-70):157,189,156"
Data Axes Tilt:  Plumb
Data Axes Orientation:
  first  (x) = Right-to-Left
  second (y) = Posterior-to-Anterior
  third  (z) = Inferior-to-Superior   [-orient RPI]
R-to-L extent:   -78.000 [R] -to-    78.000 [L] -step-     1.000 mm [157 voxels]
A-to-P extent:   -76.000 [A] -to-   112.000 [P] -step-     1.000 mm [189 voxels]
I-to-S extent:   -70.000  -to-    85.000 [S] -step-     1.000 mm [156 voxels]
Number of values stored at each pixel = 1
  -- At sub-brick #0 '#0' datum type is float:            0 to            30
----- HISTORY -----
[emily@zhangxue-Precision-T7610: Fri Mar  2 04:07:20 2018] 3dWarp -mni2tta -NN -prefix Transformed_dset probmap-gm-r20-insula_posterior_long_gyrus_L.nii

It can't match the TT_N27 dateset:

3dinfo TT_N27
++ 3dinfo: AFNI version=AFNI_17.0.09 (Aug  7 2009) [64-bit]
Dataset File:    TT_N27+tlrc
Identifier Code: XYZ_8RjUZA_-GBen3pQPl0DbbA  Creation Date: Wed Aug  1 13:46:03 2007
Template Space:  TT_N27
Dataset Type:    MRI Anatomy (-anat)
Byte Order:      MSB_FIRST [this CPU native = LSB_FIRST]
Storage Mode:    BRIK
Storage Space:   4,643,401 (4.6 million [mega]) bytes
Geometry String: "MATRIX(1,0,0,-80,0,1,0,-80,0,0,1,-65):161,191,151"
Data Axes Tilt:  Plumb
Data Axes Orientation:
  first  (x) = Right-to-Left
  second (y) = Anterior-to-Posterior
  third  (z) = Inferior-to-Superior   [-orient RAI]
R-to-L extent:   -80.000 [R] -to-    80.000 [L] -step-     1.000 mm [161 voxels]
A-to-P extent:   -80.000 [A] -to-   110.000 [P] -step-     1.000 mm [191 voxels]
I-to-S extent:   -65.000  -to-    85.000 [S] -step-     1.000 mm [151 voxels]
Number of values stored at each pixel = 1
  -- At sub-brick #0 'colin27T1_seg' datum type is byte:            0 to           222

And it can't be used as the mask directly to 3dmaskave. What should I do next?
Yu



Edited 8 time(s). Last edit at 03/02/2018 12:11AM by Zhang Yu.