Hi freesurfer experts is it possbile to change the radius for the LGI computation. ( it's normally set at 25 mm) we waned to try computing the LGI with a smaller radius. I looked the in the "compute_lgi.m" file, and it does not use radius, (even though radius is an input parameter for it) Thanks Jon
Hi Jon,
The fastest way is probably to change the radius value on row 40 in mris_compute_lgi. We originally intended to make an option for setting the radius, but I realize that we forgot it in the end. I'll see if we can change it for the next version, but in the mean time change the value directly in mris_compute_lgi and you'll be fine.
Best,
Marie
On Oct 11, 2013, at 11:02 AM, Jon Wieser wieser@uwm.edu wrote:
Hi freesurfer experts is it possbile to change the radius for the LGI computation. ( it's normally set at 25 mm) we waned to try computing the LGI with a smaller radius. I looked the in the "compute_lgi.m" file, and it does not use radius, (even though radius is an input parameter for it) Thanks Jon
-- Jon Wieser Research Specialist UW-Milwaukee Psychology Department, Pearse Hall Rm 366 2441 East Hartford Ave Milwaukee, WI 53211 Phone: 414-229-7145 Fax: 414-229-5219 _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
HI Marie, What is the minimum radius that you would suggest to use, and still produce reliable results JOn
----- Original Message ----- From: "Marie Schaer" Marie.Schaer@unige.ch To: "Jon Wieser" wieser@uwm.edu Cc: "freesurfer" freesurfer@nmr.mgh.harvard.edu Sent: Friday, October 11, 2013 9:04:27 PM Subject: Re: [Freesurfer] LGI radius
Hi Jon,
The fastest way is probably to change the radius value on row 40 in mris_compute_lgi. We originally intended to make an option for setting the radius, but I realize that we forgot it in the end. I'll see if we can change it for the next version, but in the mean time change the value directly in mris_compute_lgi and you'll be fine.
Best,
Marie
On Oct 11, 2013, at 11:02 AM, Jon Wieser wieser@uwm.edu wrote:
Hi freesurfer experts is it possbile to change the radius for the LGI computation. ( it's normally set at 25 mm) we waned to try computing the LGI with a smaller radius. I looked the in the "compute_lgi.m" file, and it does not use radius, (even though radius is an input parameter for it) Thanks Jon
-- Jon Wieser Research Specialist UW-Milwaukee Psychology Department, Pearse Hall Rm 366 2441 East Hartford Ave Milwaukee, WI 53211 Phone: 414-229-7145 Fax: 414-229-5219 _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
Hi Jon,
Look at our validation paper (the IEEE TMI 2008) where we tried a few radii. I would not recommend going below 10-15 mm because you'll probably get awkward ROI.
Best,
Marie
On Oct 15, 2013, at 9:47 AM, Jon Wieser wieser@uwm.edu wrote:
HI Marie, What is the minimum radius that you would suggest to use, and still produce reliable results JOn
----- Original Message ----- From: "Marie Schaer" Marie.Schaer@unige.ch To: "Jon Wieser" wieser@uwm.edu Cc: "freesurfer" freesurfer@nmr.mgh.harvard.edu Sent: Friday, October 11, 2013 9:04:27 PM Subject: Re: [Freesurfer] LGI radius
Hi Jon,
The fastest way is probably to change the radius value on row 40 in mris_compute_lgi. We originally intended to make an option for setting the radius, but I realize that we forgot it in the end. I'll see if we can change it for the next version, but in the mean time change the value directly in mris_compute_lgi and you'll be fine.
Best,
Marie
On Oct 11, 2013, at 11:02 AM, Jon Wieser wieser@uwm.edu wrote:
Hi freesurfer experts is it possbile to change the radius for the LGI computation. ( it's normally set at 25 mm) we waned to try computing the LGI with a smaller radius. I looked the in the "compute_lgi.m" file, and it does not use radius, (even though radius is an input parameter for it) Thanks Jon
-- Jon Wieser Research Specialist UW-Milwaukee Psychology Department, Pearse Hall Rm 366 2441 East Hartford Ave Milwaukee, WI 53211 Phone: 414-229-7145 Fax: 414-229-5219 _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
freesurfer@nmr.mgh.harvard.edu
-
Jon Wieser -
Marie Schaer