[Insight-users] resampled CT images can not restore window width and CT number

[Hsiang-Chi Kuo]

Hi,

The pixel type in the exapmles were character or unsign short. After I
changed them to shrot, the CT number and window range were restored on the
resampled images. Thanks.

Howard

On Wed, Feb 4, 2009 at 11:23 AM, Hsiang-Chi Kuo <kuoxgx at gmail.com> wrote:

> Hi,
>
> I was trying to used some of registraion codes to registered two different
> 3DC CT image sets. Both of the images sets has volume of 512x512x75. My
> question is when I applied DefomableRegistration15.cxx ~
> DefomableRegistration17.cxx, the resampled image still have orirginal CT
> number range [window 2000]. However, when I applied ImageRegistraion8,
> MultiResImageRegistration1, and MultiResImageRegistration2, the grey level
> of the resampled images become  256 [0~255]. Even if I tried
> ImageRegionIterator.cxx to crop a subregion, the resampled image still
> returned 256 grey level. Can anyone tell me why the resampled images did not
> restored the original window width? Thanks.
>
> Howard
>
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