Dear all expert,
Hello, I have been trying to solve this WM/GM boundary error. The data I attached here have a lots of problems, especially WM/GM boundary was not detected in temporal areas. Using mri_cnr function, I calculated the gray/white CNR of the norm.mgz.
--------------------------------- norm.mgz
white = 97.3+-10.3, gray = 77.3+-14.8, csf = 55.6+-19.5 gray/white CNR = 1.222, gray/csf CNR = 0.790 lh CNR = 1.006
white = 97.0+-11.2, gray = 76.9+-15.1, csf = 55.9+-19.3 gray/white CNR = 1.139, gray/csf CNR = 0.737 rh CNR = 0.938 total CNR = 0.972 ----------------------------------
1. Does the low CNR affect the bad tissue segmentation results? How can I solve the problem? Is there a way to improve the low CNR value?
2. How can I delete the continuous areas, indicated by red arrow (axial, 134)?
I use freesurfer-Darwin-leopard-i686-stable-pub-v5.1.0.
Thank you for any comments or replies in advance.
Best,
EK
