Dear Chris, 

Using your tool to convert a Philips ADC map from dicom to nifti (Chris Rorden's dcm2niiX version 10oct2016 (32-bit Windows))  I get this:

Philips Precise RS:RI:SS = 3.01783:0:0.0042949 (see PMC3998685)

Looking into PMC3998685 I can find that the final equation used to transform stored values (PV) into the final values (FP) is:

FP = PV ·(1/SS) + RI/(RS·SS) = PV · scl_slope + scl_intercept.

The scl_slope (1/SS) and the scl_intercept  (RI/(RS·SS)) values written in the nifti file by your tool agree with that definition, but if I get the FP values using the PV values written in the raster I don't get the FP values obtained with other tools (DWIConvert and mcverter, which perform this operation and save a nifti file with scl_slope=1, scl_intercept = 0 and FP values in the raster). In order to make your nifti agree with the other two I need to use FP = PV · 1/scl_slope.

I'm pretty sure that the correct values are the other two because I'm working with an ADC map and those are which make sense.

Am I missing something?

Thanks for sharing your tool.