Dear doug:

I overlaped the transformed vol ROI to the original T1 image, both in native space, then surprisingly found out that lh labeled ROI was on the right hemisphere but contained the exact lh sulcus or gyrus information. I converted the spacific label to ROI based on white/grey boundry, so I can confirmed the quality of my result with the help of morphormetric information of that boundry just by eyes.

best, cowen

2013-10-22

wen.zhang55

发件人：Douglas N Greve greve@nmr.mgh.harvard.edu 发送时间：2013-10-22 23:04 主题：Re: [Freesurfer] result is L-R fliped in native space 收件人："freesurfer"freesurfer@nmr.mgh.harvard.edu 抄送：

How are you determining that they are lr flipped?

On 10/21/2013 11:18 PM, wen.zhang55 wrote:

Dear Freesurfer： I am now working in converting cortical labels from freesurfer to volumetric masks. First i gained the registration matrix by bbregister, then applied those matrix to tranform ROI labels into native space using label2vol. However, when i got the final .NII results, both of them turn out to be L-R fliped. (left ROI on the right hemisphere). From my understanding, freesurfer will automaticly recognize the head direction of the original T1 images and my original T1 data contains the flip information due to the way we scaned. So why this happen? By the way, the recon-all results did good. Thank you very much! best, Cowen 2013-10-22

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wen.zhang55

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