<div dir="ltr"><div><div>Hi Pietro,<br></div>well, DICOM is composed of a set of 2D slices that compose a volume. <br><br>In principle, the slice thickness will be constant for all slices. There are some other tags whose value changes from slice to slice.<br>
<br></div><div>Furthermore, the pointed example [1] takes a DICOM series (image dimension is 3) as its input and creates a metadata dictionary for each slice, so you may find there the way to get the information you need about a given slice.<br>
<br>If you need the value of a variable tag, you'll need to set which slice's information you want; you don't need to know its file name, but I guess you'll need to know how your slices are sorted so that the "3rd" slice is the one you expect to be the "3rd".<br>
</div><div><div><br>I cannot answer about NRRD files, sorry.<br><br><div><div class="gmail_extra">[1] <a href="http://www.itk.org/Wiki/ITK/Examples/DICOM/ResampleDICOM" target="_blank">http://www.itk.org/Wiki/ITK/Examples/DICOM/ResampleDICOM</a><br>
<br><br><br><br><div class="gmail_quote">On 7 May 2014 13:34, Pietro Nardelli <span dir="ltr"><<a href="mailto:pie.nardelli@gmail.com" target="_blank">pie.nardelli@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr">Hi Jon, <div><br></div><div>thanks a lot for your answer. I still have some doubt though. I tried to look at the examples you mentioned, but it seems to me that they are all for 2D images (dicom image extracted by a series?). How can I get the slice thickness of a specific slice, say the 3rd on for example, without the need to specify the name of that slice? Is it possible to do that? Or I need to know the name of the specific slice?</div>
<div>Also, what if instead of a dicom I have a nrrd file. How may I get the slice thickness in this case?</div><div><br></div><div>Many many thanks for your help,</div><div>Pietro</div></div><div class="gmail_extra"><br>
<br>
<div class="gmail_quote">2014-05-07 7:36 GMT+01:00 Jon Haitz Legarreta <span dir="ltr"><<a href="mailto:jhlegarreta@vicomtech.org" target="_blank">jhlegarreta@vicomtech.org</a>></span>:<div><div class="h5"><br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr"><div><div>Hi Pietro,<br></div>you can have a look at this example [1].<br><br></div><div>On the other hand, if you are dealing with at DICOM dataset, the tag that stores the slice thickness information is 0018 | 0050 [2].<br>
<br></div><div>In section 7.12.3 of the ITK SW Guide [3] you may find some additional example about how to get the information of the DICOM tags. Basically, ITK uses a library called GDCM to handle DICOM files, and by creating the appropriate GDCM objects, you'll be able to retrieve the value of any DICOM tag.<br>
</div><div><br></div>HTH,<br>JON HAITZ<br><div><br>[1] <a href="http://www.itk.org/Wiki/ITK/Examples/DICOM/ResampleDICOM" target="_blank">http://www.itk.org/Wiki/ITK/Examples/DICOM/ResampleDICOM</a><br><div><div><div><div class="gmail_extra">
[2] <a href="http://medical.nema.org/Dicom/2011/11_06pu.pdf" target="_blank">http://medical.nema.org/Dicom/2011/11_06pu.pdf</a> (page 22)<br>[3] <a href="http://www.itk.org/ItkSoftwareGuide.pdf" target="_blank">http://www.itk.org/ItkSoftwareGuide.pdf</a><br>
<br><br><div class="gmail_quote"><div><div>On 6 May 2014 18:47, Pietro Nardelli <span dir="ltr"><<a href="mailto:pie.nardelli@gmail.com" target="_blank">pie.nardelli@gmail.com</a>></span> wrote:<br>
</div></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div><div dir="ltr">Hi guys,<div><br></div><div>would you mind telling me if there a method to get the slice thickness of a CT dataset in ITK? I have been looking it up online, but I could not find a good explanation. </div>
<div>
<br></div><div>Thank you very much for your help,</div><div>Pietro</div></div>
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