# Maximum and minimum Window width and level values for a DICOM Image - DICOM

This is a discussion on Maximum and minimum Window width and level values for a DICOM Image - DICOM ; Hi, Can anyone tell me what will be the maximum and minimum window width and level values for any dicom image. Will that value depends on the Image Modality or Image width and height ? I need to limit these ...

# Thread: Maximum and minimum Window width and level values for a DICOM Image

1. ## Maximum and minimum Window width and level values for a DICOM Image

Hi,

Can anyone tell me what will be the maximum and minimum window width
and level values for any dicom image.
Will that value depends on the Image Modality or Image width and
height ?
I need to limit these values in the viewer so that the user cannot
give beyond that values.
Is there any way to calculate those values?

--
Regards,
Sirisha.G

2. ## Re: Maximum and minimum Window width and level values for a DICOMImage

On Nov 10, 10:38*pm, Sirisha wrote:
> Hi,
>
> Can anyone tell me what will be the maximum and minimum window width
> and level values for any dicom image.
> Will that value depends on the Image Modality or Image width and
> height ?
> I need to limit these values in the viewer so that the user cannot
> give beyond that values.
> Is there any way to calculate those values?
>
> --
> Regards,
> Sirisha.G

Hi Sirisha,

I'm not a dicom expert by far, but I've noticed that it seems to
depend on how many bit the image is. The higher the bit, the larger
the range of window width.

3. ## Re: Maximum and minimum Window width and level values for a DICOM Image

it depends upon Bit allocated of image.
Also the formula is differ for Unsigned and Signed images.

Unsigned images

Window Width = 1 to 2^HighBit
Window Center = 1 to 2^High bit

For signed images

Window Width = 1 to 2^high bit
Window center = -(2^highbit)/2 to +(2^highbit)/2