[Insight-users] DICOM WINDOW CENTER AND WIDTH

[Fleysher, Lazar]

Hello Roberto

If I understood you correctly, you are asking how to convert from pixel intensity to image intensity.
This is done, as far as I know like this:

ImageValue = slope * storedValue + intercept.

However, you should be aware that this is not the whole story. Some other hardware-related 
parameters might be at play which might contribute to scaling. It depends on how the data was acquired...

Lazar
________________________________________
From: insight-users-bounces at itk.org [insight-users-bounces at itk.org] on behalf of roberto.laurita [roberto.laurita at gmail.com]
Sent: Wednesday, December 28, 2011 17:57
To: insight-users at itk.org
Subject: [Insight-users] DICOM WINDOW CENTER AND WIDTH

Hi all,

I hope someone will help me. My deal is to import and compare 2 slices
(.dcm).

In Dicom header there are 2 parameters 0028|1050 and 0028|1051 which work
like contrast and brightness. I need to modify these parameters. Doing this,
pixel intensity should be modified.

Using ITK examples I'm able to do everything (read dicom header, and read
pixels) but the change above.

To compare pixel intensities of 2 slice windows center and width must be the
same. A normalization is required.

Could you suggest me how to change windows center and width ?

Thanks

BR

Roberto

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