Hello free Surfer communities,
I'm Francisco Robles from the Instituto Nacional de Neurología y Neurocirugía in México City and I habe a serious boubt about Free Surfer Analysis, is a basic one son I am kind of embarrased to ask it but is realllly important. I really do not know if left hemisphere activation is the left one and right is really the right activation one in FS-FAST. I got my images from a GE MRI in dicom in a radiological view (left is right and viceversa) and converted it to analyze in MRI-Converter. Then I gave the analyze images the hole FreeSurfer Processing with strcutural and the same for FS-FAST. I never changed the images, so I guess left stands as right and right stands as left except if FS-FAST knows it was a radiological view and changed it. My doubt comes now because the regions significantly activated according to FS-FAST seem to contradict what I expected.
Thank you all in advance and thanks for putting this invaluable instrument for free and the techinical support also.
_________________________________________________________________ Sabes que son imágenes dinámicas en Messenger? Descúbrelo. http://download.live.com/messenger
Hi Francisco,
you are *much* better off avoiding going through analyze. Once you do that all bets are off. Can you reprocess directly from the dicoms and see if the left/right issue goes away?
cheers, Bruce On Thu, 12 Feb 2009, Francisco Robles wrote:
Hello free Surfer communities,
I'm Francisco Robles from the Instituto Nacional de Neurología y Neurocirugía in México City and I habe a serious boubt about Free Surfer Analysis, is a basic one son I am kind of embarrased to ask it but is realllly important. I really do not know if left hemisphere activation is the left one and right is really the right activation one in FS-FAST. I got my images from a GE MRI in dicom in a radiological view (left is right and viceversa) and converted it to analyze in MRI-Converter. Then I gave the analyze images the hole FreeSurfer Processing with strcutural and the same for FS-FAST. I never changed the images, so I guess left stands as right and right stands as left except if FS-FAST knows it was a radiological view and changed it. My doubt comes now because the regions significantly activated according to FS-FAST seem to contradict what I expected.
Thank you all in advance and thanks for putting this invaluable instrument for free and the techinical support also.
Sabes que son imágenes dinámicas en Messenger? Descúbrelo. http://download.live.com/messenger
freesurfer@nmr.mgh.harvard.edu
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Bruce Fischl -
Francisco Robles