[Insight-users] Proton Density/T2-weighted images

Mon, 5 Jan 2004 13:26:01 -0800

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Hi Luis,
I have two questions:

1)       I tried to use the code you had sent me previously to read a series
image and save as Analyze format. Unfortunately although the original images
are of type which can definitely be supported by unsigned short, the output
image looks totally scrambled up. If I change pixel type to unsigned char,
then the image looks okay but I lose all the high values and that's
obviously visible. Could you tell me what the problem might be?
2)       I have a large number of double spin echo images where the shorter
echo is PD and larger is T2-weighted. I want to extract only the
T2-weighted. They are part of the same series. I know that in the software
guide you have used a lot of PD/T2-weighted examples, so there must be a way
to extract this. With DicomSeriesFileName I see that you can sort by
ImageNumber, Image Position or Slice Location. Unfortunately none of these
will help sort T2 from PD. Is there a better way to do this?

Thanks
Radhika

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<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Hi Luis,<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>I have two questions:<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<![if !supportLists]>1)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
<![endif]>I tried to
use the code you had sent me previously to read a series image and save =
as
Analyze format. Unfortunately although the original images are of type =
which
can definitely be supported by unsigned short, the output image looks =
totally
scrambled up. If I change pixel type to unsigned char, then the image =
looks
okay but I lose all the high values and that's obviously visible. Could
you tell me what the problem might be?<o:p></o:p>

<![if !supportLists]>2)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
<![endif]>I have a
large number of double spin echo images where the shorter echo is PD =
and larger
is T2-weighted. I want to extract only the T2-weighted. They are part =
of the
same series. I know that in the software guide you have used a lot of
PD/T2-weighted examples, so there must be a way to extract this. With =
DicomSeriesFileName I see that you can sort by =
ImageNumber, Image Position or Slice Location.
Unfortunately none of these will help sort T2 from PD. Is there a =
better way to
do this?<o:p></o:p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Thanks<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Radhika<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

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<P><FONT SIZE=3D2 FACE=3D"Arial">                                       =
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<P><FONT SIZE=3D2 =
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Confidentiality Notice.

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