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<small><font face="Helvetica, Arial, sans-serif">Hi Alfonso,<br>
<br>
One option (which would preserve the HU) would be to create separate
label images associated with each CT series to mark the nodules. These
label images could then be displayed on top of the CT (with
transparency if you desire). The CT series could then retain their
pixel type and the labels take on any pixel type you desire (eg.
unsigned char). ITK-SNAP ( <a class="moz-txt-link-freetext" href="http://www.itksnap.org">http://www.itksnap.org</a> ) does something
similar to display the contour extracted from a level-set.<br>
<br>
HTH<br>
<br>
Cheers, Dan<br>
<br>
Alfonso Castro Martinez wrote:</font></small>
<blockquote cite="mid466E9D56.8040501@udc.es" type="cite"><font
face="Helvetica, Arial, sans-serif"><small>We are using ITK 3.0.2 in
linux to manipulate CTs in DICOM of lung nodules from LIDC. In this
database each CT serie has associated a XML file with information about
the position of the nodules and other information about them.
<br>
<br>
We are developing an application to read each XML file and it shows the
nodules in each CT in different colours depending about information of
the nodule. We are trying to create RGB images using the itk::RGBPixel.
<br>
<br>
The problem is we want to conserve the Hounsfield units in the CT,
however we can't be able to make it because the values of the pixels
must be unsigned char or unsigned short int.
<br>
<br>
Are there some method in ITK to create a RGB image with the Hounsfield
units?
<br>
<br>
Thanks.
<br>
<br>
Alfonso Castro Martinez
<br>
Faculty of Computer Science
<br>
University of A Coruna
<br>
Spain
<br>
<br>
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</font>
</blockquote>
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