<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman,new york,times,serif;font-size:12pt"><div>hi luis,<br>it's a 3D MRA tof dicom image of brain vessels.<br>Regards<br>Syrine<br><br></div><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><br><div style="font-family: arial,helvetica,sans-serif; font-size: 13px;"><font size="2" face="Tahoma"><hr size="1"><b><span style="font-weight: bold;">De :</span></b> Luis Ibanez <luis.ibanez@kitware.com><br><b><span style="font-weight: bold;">À :</span></b> Syrine Sahmim <syrine.sahmim@yahoo.fr><br><b><span style="font-weight: bold;">Cc :</span></b> Xabier Artaechevarria <xabiarta@unav.es>; insight-users@itk.org<br><b><span style="font-weight: bold;">Envoyé le :</span></b> Lun 16 Novembre 2009, 0 h 39 min 14 s<br><b><span style="font-weight: bold;">Objet :</span></b> Re: [Insight-users] Re :
how to reduce a size of a dicom serie 3D<br></font><br>Hi Syrine,<br><br><br>1) What is the content of your DICOM image ?<br><br> Is it a CT scan of the brain ?<br> Is it a MRI of the abdomen ?<br> Could you post a screenshot of it to a public web site ?<br><br>Please let us know,<br><br>----<br><br>If you need to reduce the memory footprint of the image,<br><br> the typical options are:<br><br>A) Subsample the image (as Xabier suggested)<br><br>B) Crop the image (by using the RegionOfInterestImageFilter)<br> and focus on the internal rectangular block of the image<br> that contains the anatomy of interest.<br><br>C) Change the pixel type of the image.<br> (e.g. if you had PET in float, you could scale it to<br> shorts). This last one is in general a bad option,<br> given that it is very easy to lose important
information<br><br><br>Once you answer question (1) above , we will be able to<br>give you more useful advice.<br><br><br> Regards,<br><br><br> Luis<br><br><br>---------------------------------------------------------------------------------------------<br>On Sun, Nov 15, 2009 at 3:28 PM, Syrine Sahmim <<a ymailto="mailto:syrine.sahmim@yahoo.fr" href="mailto:syrine.sahmim@yahoo.fr">syrine.sahmim@yahoo.fr</a>> wrote:<br>><br>> hi,<br>> if we try to use this filter or any other method to reduce the size of dicom<br>> volume. we will lose the quality of the dicom volume because we will<br>> eliminate some voxels. My problem is how to do to reduce the volume without<br>> modifying the quality of data. Can i choos some slices randomly from the<br>> dicom seroies that i have and eliminate others to test it on matlab and then<br>> on itk or vtk<br>> Regards<br>>
Syrine<br>> ________________________________<br>> De : Xabier Artaechevarria <<a ymailto="mailto:xabiarta@unav.es" href="mailto:xabiarta@unav.es">xabiarta@unav.es</a>><br>> À : Syrine Sahmim <<a ymailto="mailto:syrine.sahmim@yahoo.fr" href="mailto:syrine.sahmim@yahoo.fr">syrine.sahmim@yahoo.fr</a>><br>> Cc : <a ymailto="mailto:insight-users@itk.org" href="mailto:insight-users@itk.org">insight-users@itk.org</a><br>> Envoyé le : Ven 13 Novembre 2009, 11 h 38 min 42 s<br>> Objet : Re: [Insight-users] how to reduce a size of a dicom serie 3D<br>><br>> Hi Syrine,<br>><br>> you can try this ITK filter:<br>><br>> <a href="http://www.itk.org/Doxygen/html/classitk_1_1ShrinkImageFilter.html" target="_blank">http://www.itk.org/Doxygen/html/classitk_1_1ShrinkImageFilter.html</a><br>><br>> Regards,<br>> Xabier<br>><br>> 2009/11/13 Syrine Sahmim <<a ymailto="mailto:syrine.sahmim@yahoo.fr"
href="mailto:syrine.sahmim@yahoo.fr">syrine.sahmim@yahoo.fr</a>><br>>><br>>> Hi,<br>>><br>>> I'm testing a code on matlab to see the result before doing it on itk or<br>>> vtk.the error i have is a warning "out of memory". So i guess that i have to<br>>> reduce the size of the dicom serie 3D that i use. I tried on matlab the<br>>> imresize function but there are some problem with it.<br>>> If someone tells me how to do it on itk or vtk or even matlab.<br>>> Thank you<br>>><br>>> Regards<br>>> syrine<br>>><br></div></div>
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