External Email - Use Caution Hello Freesurfer,
Once I had run reconall, I tried to calculating left hemisphere total grey matter volume and right hemisphere total grey matter volume by doing the sum of: TGM_left=lhcortexvol + Left-Cerebellum-Cortex + (Left-Thalamus-Proper + Left-Caudate + Left-Putamen + Left-Pallidum + Left-Hippocampus +Left-Amygdala +Left-Accumbens-area +Left-VentralDC) using the volumes values of the aseg.stats file. I did it like this because of the definitions of TGM in this webpage: https://secure-web.cisco.com/18pk-Ax0hgeQLjPCil_KNGcr0ZuCL3RBLq8NqkvLiWHU5VUuiUJaOV52GhfgAFzPXuKyXv3OUSjgFM-YHEKavejpBfKj58Pep5TTckz0Jl3Td1z2zeHjXA79b84MWTgc1vEfGiXx_Z2b3f9TPeN2KNroaOGb3GR4I8_PiH42P7pcpeHZmAVC_0XgdS7yUdIYD9Q-2YJZ9937_sKFs8lz_iIvJatyvfuFZekY3YmxFPV1308K7BeSLplhIHvUJV2AaV3TJbSSa8xyudYLc30KJvg/https%3A%2F%2Fsurfer.nmr.mgh.harvard.edu%2Ffswiki%2FMorphometryStats However I did a saninty check and compared the TGM_estimated=TGM_left + TGM_right. with the measurement in the aseg file: Measure TotalGray, TotalGrayVol, Total gray matter volume. They are similar but not the same. Which makes me wonder if this is not the proper ay of calculating it. Therefore: which is the best way of calculating left hemisphere total grey matter volume and right hemisphere total grey matter volume in a separated manner? Thanks in advance, Vicente Ferrer Predoctoral Researcher BCBL http://secure-web.cisco.com/1Y80FAmAIDLnW-nPDCMBRDUQbmyy9_KQJaimWnm60B6mbmpKCQ_tBro0XoY7GpznCvgE7QUEksgT-7X6bRkawyzmB7R54K979XH1_EU42r3LaC9vSzKV93hnwYreNA1GmBBYZqmbpO9-jjmltijKRbWEJIlAnf_VvlPquW9vBzNuHNzHj36jXiEi3vCzoWYO2jh5QNuppL1tJaUKtEQjf1kpzkhChnmujzSX_dd54PdS9SpwBSDeSgG7aYuqjrcFeBSHY2yaOll7yeKRIZXz6bA/http%3A%2F%2Fwww.bcbl.eu Legal disclaimer/Aviso legal/Lege-oharra: http://secure-web.cisco.com/1HBxObiSRumyzSCM72mU7-knka-loKiKejfXjeLERlyDL2EJtJ_UT7mTUlMCj9bTULFCPyZYHYlqAGZVddqIInyHg59reQNvQ3k8ITDbzTaBAnB_xsDe6a1lXih6S-jxNTb4MYx_7zO0Ubyk9ZXC3WXr8agkOkO2xyXQoCD1sFWCbnYSIJa2rCNXJBrm7ISoO5rkrZoaQn_2vuSIwSyEfYCGu8Vw3MJPj8taT5qlyV7m0ELP_EwTgKWbZtlVgpy3BXgUSxPjpvskO0aDlzdNOpg/http%3A%2F%2Fwww.bcbl.eu%2Flegal-disclaimer _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
