<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT size=3><FONT
face="Times New Roman"><SPAN lang=EN-GB style="mso-ansi-language:
EN-GB">Hello everyone</SPAN><SPAN lang=ES-TRAD style="mso-ansi-language:
ES-TRAD"><?xml:namespace prefix = o ns =
"urn:schemas-microsoft-com:office:office"
/><o:p></o:p></SPAN></FONT></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB
style="mso-ansi-language: EN-GB"><o:p><FONT face="Times New Roman"
size=3> </FONT></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB
style="mso-ansi-language: EN-GB"><FONT size=3><FONT face="Times New
Roman">I’m using brains2 version 4.6 and I’ve got some problems I hope
someone can help me with.<o:p></o:p></FONT></FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB
style="mso-ansi-language: EN-GB"><o:p><FONT face="Times New Roman"
size=3> </FONT></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 36pt; TEXT-INDENT: -18pt;
mso-list: l0 level1 lfo1; tab-stops: list 36.0pt"><FONT face="Times New
Roman"><SPAN lang=EN-GB style="mso-ansi-language: EN-GB"><SPAN
style="mso-list: Ignore"><FONT size=3>1)</FONT><SPAN style="FONT: 7pt 'Times
New Roman'"> </SPAN></SPAN></SPAN><SPAN
lang=EN-GB style="mso-ansi-language: EN-GB"><FONT size=3>When I try to get
the venous blood traces I can’t find voxels in the medium grey range (55-75)
on the T1 image. The whole images seem too dark and the values I get in the
lateral dural sinuses are about 35 – 45. However, I am getting a good
segmentation with these images. Is this a valid segmentation? Where could
this problem come from?<o:p></o:p></FONT></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB
style="mso-ansi-language: EN-GB"><o:p><FONT face="Times New Roman"
size=3> </FONT></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 36pt; TEXT-INDENT: -18pt;
mso-list: l0 level1 lfo1; tab-stops: list 36.0pt"><FONT face="Times New
Roman"><SPAN lang=EN-GB style="mso-ansi-language: EN-GB"><SPAN
style="mso-list: Ignore"><FONT size=3>2)</FONT><SPAN style="FONT: 7pt 'Times
New Roman'"> </SPAN></SPAN></SPAN><SPAN
lang=EN-GB style="mso-ansi-language: EN-GB"><FONT size=3>Some of my images
are cut in the anterior and/or posterior part of the brain when I do the
realignment on the sagittal image. These cuts are generally small but
sometimes they affect to five or six slice on the image. Is there any way to
avoid these cuts?<o:p></o:p></FONT></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB
style="mso-ansi-language: EN-GB"><o:p><FONT face="Times New Roman"
size=3> </FONT></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 36pt; TEXT-INDENT: -18pt;
mso-list: l0 level1 lfo1; tab-stops: list 36.0pt"><FONT face="Times New
Roman"><SPAN lang=EN-GB style="mso-ansi-language: EN-GB"><SPAN
style="mso-list: Ignore"><FONT size=3>3)</FONT><SPAN style="FONT: 7pt 'Times
New Roman'"> </SPAN></SPAN></SPAN><SPAN
lang=EN-GB style="mso-ansi-language: EN-GB"><FONT size=3>We are working in a
longitudinal study with schizophrenia patients. We get two magnetic
resonances on each patient (one when the patient is diagnosed with
schizophrenia and other one year later). There is an option in the Brains2
toolbar (workup > Run Air > Longitudinal) to work with longitudinal
studies but is not available in our computers. To get the analysis I align
the second T1 image in the normal way and I fit it to the T1 resampled image
of the first MR. Then I get the T1/T2 fit and segmentation in the normal
way. Finally I use the brain.zroi I got in the first MR, check that this ROI
fits the image and run the segmentation volumes. Working<SPAN
style="mso-spacerun: yes"> </SPAN>this way I get significant <SPAN
style="mso-spacerun: yes"> </SPAN>differences in the grey matter
volumes in the occipital box. We would not expect these differences so I was
wondering if the analysis done in this way is wrong or there is a reason for
these differences<o:p></o:p></FONT></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB
style="mso-ansi-language: EN-GB"><o:p><FONT face="Times New Roman"
size=3> </FONT></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB
style="mso-ansi-language: EN-GB"><FONT size=3><FONT face="Times New
Roman">Thanks <o:p></o:p></FONT></FONT></SPAN></P>