How to convert 16 bit dcm file to 8 bit dcm file

[ramprasad85]

I want to convert 16 bit gray dcm file to 8 bit gray dcm file
I used dcm2pnm.exe to convert the 16 bit pixel data to 8 bit bmp using

Code: Select all

dcm2pnm.exe +ob src_16bit.dcm 8bit.bmp

tried to make a new dcm using the 8bit data and other details from source file

Code: Select all

img2dcm.exe -i BMP --series-from src_16bit.dcm 8bit.bmp 8bit.dcm

but it turns out that the resulting file has 24bit RGB data

Please help me

As an alternative,
I managed to create an 8bit dcm file using gdcm's gdcmimg.exe.

Code: Select all

dcm2pnm.exe +op src_16bit.dcm 8bit.pgm
gdcmimg.exe 8bit.pgm anon.dcm

But I dont know how to add the patient/study/series information in src_16bit.dcm to anon.dcm

Is there some way to achieve this using dcmtk or any other such tool kit?
Kindly help

Thanks and Regards

[J. Riesmeier]

but it turns out that the resulting file has 24bit RGB data

Yes, but this is consistent with the description in the documentation (man page).

Is there some way to achieve this using dcmtk or any other such tool kit?

Of course it is, but it requires writing a new program ...