Re: [Freesurfer] Question about using tkregisterfv to check registration

2019-10-07 Thread Greve, Douglas N.,Ph.D.
When you say that you changed the scale, what do you mean? Are you sure that the PET voxel size is accurate? Something else you can try is to specify --dof 9 when you run mri_coreg -- this will fit the scale as well as the translation and rotation. On 10/7/2019 1:51 PM, Vicky Yang wrote:

Re: [Freesurfer] Question about using tkregisterfv to check registration

2019-10-07 Thread Vicky Yang
External Email - Use Caution Hi Doug, I am sure that the anatomical and PET come from the same subject. And I am using the same processing procedures as worked well on other 7 subjects. So I don't think it is because of processing or mixing data. According to the co-registered re

Re: [Freesurfer] Question about using tkregisterfv to check registration

2019-10-07 Thread Greve, Douglas N.,Ph.D.
You can manually change the registration in tkregisterfv. But we rarely see this happen and I'm wondering if it might be some other problem. Are you totally sure that the anatomical and PET come from the same subject? On 10/3/2019 12:59 PM, Vicky Yang wrote: External Email - Use Caution

Re: [Freesurfer] Question about using tkregisterfv to check registration

2019-10-03 Thread Vicky Yang
External Email - Use Caution Hi Doug, Thanks for your respond! I ran the the command with debug flag and figured out the problem. It is because I use a space in the name of the PET data directory. After removing the space character, tkregisterfv works great! But one PET image did

Re: [Freesurfer] Question about using tkregisterfv to check registration

2019-10-02 Thread Greve, Douglas N.,Ph.D.
Can you run tkregisterfv --debug --mov pet.nii.gz --targ T1.nii --reg pet_T1.reg.lta and send the terminal output? On 10/2/2019 3:58 PM, Vicky Yang wrote: External Email - Use Caution Dear Freesurfer experts, I used mri_coreg to register my pet data to T1 like below: mri_core

[Freesurfer] Question about using tkregisterfv to check registration

2019-10-02 Thread Vicky Yang
External Email - Use Caution Dear Freesurfer experts, I used mri_coreg to register my pet data to T1 like below: mri_coreg --mov pet.nii.gz --ref T1.nii --reg pet_T1.reg.lta After coregistering, I checked the registration using tkregisterfv like below: tkreg