[vtkusers] complex to absolute value filter?

[Marius S Giurgi]

Hi everyone.

I was wondering if anyone knows of a filter to convert (3D volume) 
complex data to absolute value data.
I'm reading an MRI complex data file with vtkImageReader with 
dimensionality 3 and numberofcomponents 2 (complex 3d volume) and I 
want to visualize it. Before that I need to convert the complex 3d 
volume to absolute value 3d volume.

thanks,
marius