[vtkusers] why the DICOM image is completely white when I use lung color level and window?

[David Gobbi]

Hi Liu Peng,

Use the reader's GetRescaleSlope() and GetRescaleIntercept().  See
http://dgobbi.github.io/vtk-dicom/doc/api/image_display.html and scroll
down to the "Grayscale image display" section.

For a run-down on some of the complications of Window/Level in DICOM, see
the following:
http://dicom.nema.org/medical/dicom/current/output/chtml/part03/sect_C.11.html
http://dicom.nema.org/medical/dicom/current/output/chtml/part03/sect_C.11.2.html

 - David

On Mon, Sep 4, 2017 at 8:18 AM, Liu_tj <tjlp at netease.com> wrote:

> Hi,
>
> I use vtkImageViewer2 to display DICOM series. If I set the lung color
> level and window, which is -600 and 1200, to the vtkImageViewer2, the image
> is completely white.
>
> If I use other DICOM browser tool, with the same level and window, the
> DICOM is displayed correclty.
>
> What's wrong with the level and window setting to vtkImageViewer2?
>
> Thanks
>
> Liu Peng
>
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