[Insight-users] Re: 答复: DICOMApp.

[Luis Ibanez]

Hi Zhao,

Once you start seriously using VTK for an
application you may want to follow one of
the multiple VTK tutorials that are available
online or get the VTK User's Guide. This will
save you a lot of time an effort in understanding
how VTK works.

You may want to address VTK related questions
to the VTK user's list where you will find
a larger pool of VTK experts.

--

About DicomImageIO and DicomImageIO2, here
is what happens, DICOM is a standard but it
is a very extensive one. In practice that results
in a large variablility of DICOM files.  It is
hard to find a reader capable of managing all
possible DICOM files. So, we compromised in
covering some basic aspects of DICOM.

This is done in DicomImageIO. Recently a group
from GE contributed another Dicom reader they
have developed. We found that some files
that couldn't be read with DicomImageIO worked
fine with DicomImageIO2, and the other way around.
So, we couldn't say that one reader was better
than the other,... and decided to keep both.

In practice, if you have a Dicom file, try first
to read it with DicomImageIO, if it doesn't work,
try using DicomImageIO2, if still doesn't work
send a message to this list, and propably some
of the developers of the Dicom reader will be
able to help you.


Regards,


    Luis



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zhao yong qiang wrote:
> Hi Luis,
>    When I change dicom file to another file or display it in VTK, I meet
> such problem, How to choose the pixel type(unsigned short, long, float),
> what is the difference, and how to convert them correctly?
>   Another question: From the document of ITK, I think DICOMImageIO2 and
> DicomImageIO can both read DICOM file, so what is the difference
> between, and where do we use them correctly?
>     Thanks!!
>