modifying pixel data

[JBO]

Hi everyone,

I'm new to DICOM and I have still some questions after reading the standard.

I am working with different DX images and I would like them to share the same caracteristics (pixel spacing, bits allocated, ....)

My idea was to create a BMP file from the dicom image pixel data after having applicated the Modality and VOI LUT.

Then with the BMP file, I will be able to modify data and display it.

To finish, I wanted to convert this BMP file into a Secondary Capture (without modality or VOI because it is a single frame image).


Is this correct?

thanks in advance.

JBO

[Jörg Riesmeier]

If I understand your posting correctly, you would like to do all this without "real" programming, i.e. using the existing DCMTK command line tools only?

[JBO]

Hi,

For example, I want to modify pixel spacing. So my idea was to extract pixel datas. Put them into a matrix.

Then If I modify pixel spacing it will add rows or columns. So it will be easier to modify it thanks to a matrix.

I hope I am clear.

[martinrame]

The only way to do this is by code, with c++

Here's the code I'm using to modify pixel data:

viewtopic.php?t=2898

[Jörg Riesmeier]

If the pixel data values are modified by some other means, you could also use dcmodify to perform the modifications on the DICOM data elements.

[JBO]

Hi,

thanks, I'm going to try it as soon as possible.

[Michael Onken]

You can also modify large attribute values like (uncompressed) pixel data with dcmodify, by using the option "-if --insert-from-file".

Best Regards,
Michael