External Email - Use Caution Aloha,
Mahalo for your response! What do you use for normalization between subjects? Mālama Pono, Krystalyn Edwards-Calma > On Jun 27, 2025, at 5:23 AM, Douglas N. Greve <dgr...@mgh.harvard.edu> wrote: > > This is not necessarily a problem. The "e" in eTIV means "estimate". It is a > slight hack where the registration to MNI space is used to compute an > estimate of the TIV, so it is not based on a segmentation or any real image > processing, so it is sometimes quite off. This ratio was really just meant to > be a flag to catch your attention. Now that it has it, just look at the skull > stripping and see if it looks ok. If it does, then ignore the flag. > >> On 6/25/2025 6:49 PM, Krystalyn Edwards-Calma wrote: >> External Email - Use Caution >> >> Aloha, >> >> I am using Version 7.4.1. After running recon-all for multiple subjects, I >> noticed the Brain mask is larger than the intracranial volume (Mask-to-eTIV >> > 1). I attempted multiple different skull stripping methods, however, the >> mask-to-eTIV is always > 1. Any suggestions on how to fix this? Mahalo for >> your help. >> >> Malama pono, >> >> Krystalyn Edwards-Calma >> _______________________________________________ >> Freesurfer mailing list -- freesurfer@nmr.mgh.harvard.edu >> To unsubscribe send an email to freesurfer-le...@nmr.mgh.harvard.edu >> https://secure-web.cisco.com/1MMb7ngXxdR7S6cxd8Jg9Q_yGYgnFj6FoyrmnMsABNPukkCnoFleOzC7EGbb391hY_Pc4rZWqsvfUmOFXRFW4a2j-lpb-dxtfOcnmz0307vJbg_wZlUZwIk4Eldxqeurdd9tcDHutYswLkJhAcBeIcryXVPZ7B3oawKBuaDa7db4aDOOt9KTjP_mlKhK9RMH9OkV1cKZtSOM8WzuUDLGRBkuUVEjxbwVApYwernywd9zxAWCOCTOnxk1zV5FTf8sLRNnbgPOdWnhrb5QOcDPoKgcMKJ7A0AJE_JByb9kq55cx3GiVz-whoNraE8nzb7I7unklY5kwklG6CDUT7K1YOQ/https%3A%2F%2Furldefense.com%2Fv3%2F__https%3A%2F%2Fmail.nmr.mgh.harvard.edu%2Fmailman3%2Flists%2Ffreesurfer%40nmr.mgh.harvard.edu%2F__;!!PvDODwlR4mBZyAb0!TEWKPHASp34dgkfttuGfKPNjzYPzOwYk5-Z1zQ_HzKvAr2liyWsyhdn1G5BbRuN3PsGnEwx-x6E8Nkv0ErSxkRw9pls$ > > _______________________________________________ > Freesurfer mailing list -- freesurfer@nmr.mgh.harvard.edu > To unsubscribe send an email to freesurfer-le...@nmr.mgh.harvard.edu > https://secure-web.cisco.com/1MMb7ngXxdR7S6cxd8Jg9Q_yGYgnFj6FoyrmnMsABNPukkCnoFleOzC7EGbb391hY_Pc4rZWqsvfUmOFXRFW4a2j-lpb-dxtfOcnmz0307vJbg_wZlUZwIk4Eldxqeurdd9tcDHutYswLkJhAcBeIcryXVPZ7B3oawKBuaDa7db4aDOOt9KTjP_mlKhK9RMH9OkV1cKZtSOM8WzuUDLGRBkuUVEjxbwVApYwernywd9zxAWCOCTOnxk1zV5FTf8sLRNnbgPOdWnhrb5QOcDPoKgcMKJ7A0AJE_JByb9kq55cx3GiVz-whoNraE8nzb7I7unklY5kwklG6CDUT7K1YOQ/https%3A%2F%2Furldefense.com%2Fv3%2F__https%3A%2F%2Fmail.nmr.mgh.harvard.edu%2Fmailman3%2Flists%2Ffreesurfer%40nmr.mgh.harvard.edu%2F__;!!PvDODwlR4mBZyAb0!TEWKPHASp34dgkfttuGfKPNjzYPzOwYk5-Z1zQ_HzKvAr2liyWsyhdn1G5BbRuN3PsGnEwx-x6E8Nkv0ErSxkRw9pls$ > 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 Mass General Brigham > Compliance HelpLine at > https://secure-web.cisco.com/1LPuY3aaR5-wDJPPT3zpVdPPGYK3nwOAfGZ7j4L-4k20nPGj57_IHMCZdd_e3AAx517OjrrtuViZdxJXjkfNAE0Q01livKgCE7O4O2Flu_z5hb-BArl1cNNaebH1_HA0xAHmqNYyJLBfGR0LuluAN-K5fQpv8WVMxUik_aYeOMpBw7tn4Mn8wnjG8WNDQusIQWvL7bNh8TIRO-GvzM3Q1OWnxrvX9TrNi6sgGQ_WNwTxppcScNDfW0m-S5Vj5xnek0s1eWiqBDpWyN9jAcJ39yWd2E9W8Hv3K3Fm1tx_ldJMuZUYaUkahrI4-utB4TyC_MXz2yFZ6HtIC2ke6SLdlaA/https%3A%2F%2Furldefense.com%2Fv3%2F__https%3A%2F%2Fwww.massgeneralbrigham.org%2Fcomplianceline__;!!PvDODwlR4mBZyAb0!TEWKPHASp34dgkfttuGfKPNjzYPzOwYk5-Z1zQ_HzKvAr2liyWsyhdn1G5BbRuN3PsGnEwx-x6E8Nkv0ErSxvZuSEzk$ > > <https://secure-web.cisco.com/1LPuY3aaR5-wDJPPT3zpVdPPGYK3nwOAfGZ7j4L-4k20nPGj57_IHMCZdd_e3AAx517OjrrtuViZdxJXjkfNAE0Q01livKgCE7O4O2Flu_z5hb-BArl1cNNaebH1_HA0xAHmqNYyJLBfGR0LuluAN-K5fQpv8WVMxUik_aYeOMpBw7tn4Mn8wnjG8WNDQusIQWvL7bNh8TIRO-GvzM3Q1OWnxrvX9TrNi6sgGQ_WNwTxppcScNDfW0m-S5Vj5xnek0s1eWiqBDpWyN9jAcJ39yWd2E9W8Hv3K3Fm1tx_ldJMuZUYaUkahrI4-utB4TyC_MXz2yFZ6HtIC2ke6SLdlaA/https%3A%2F%2Furldefense.com%2Fv3%2F__https%3A%2F%2Fwww.massgeneralbrigham.org%2Fcomplianceline__;!!PvDODwlR4mBZyAb0!TEWKPHASp34dgkfttuGfKPNjzYPzOwYk5-Z1zQ_HzKvAr2liyWsyhdn1G5BbRuN3PsGnEwx-x6E8Nkv0ErSxvZuSEzk$ > > . > Please note that this e-mail is not secure (encrypted). If you do not wish > to continue communication over unencrypted e-mail, please notify the sender > of this message immediately. Continuing to send or respond to e-mail after > receiving this message means you understand and accept this risk and wish to > continue to communicate over unencrypted e-mail. _______________________________________________ Freesurfer mailing list -- freesurfer@nmr.mgh.harvard.edu To unsubscribe send an email to freesurfer-le...@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman3/lists/freesurfer@nmr.mgh.harvard.edu/ 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 Mass General Brigham Compliance HelpLine at https://www.massgeneralbrigham.org/complianceline <https://www.massgeneralbrigham.org/complianceline> . Please note that this e-mail is not secure (encrypted). If you do not wish to continue communication over unencrypted e-mail, please notify the sender of this message immediately. Continuing to send or respond to e-mail after receiving this message means you understand and accept this risk and wish to continue to communicate over unencrypted e-mail.
