Error using interfileinfo and interfileread

I am trying to read Interfiles from a PET-CT scanner into MatLab using Interfileinfo and Interfileread. When I use Interfileinfo I get the error:

Error using interfileinfo (line 73) NEMA_2013_05_07_1x20min_delay_separate_OS3D256_2it_12MAP_R_0.8.pet.img is not a valid INTERFILE file.

Looking at (line 73) of interfileinfo the code is:

            % if no separator on first non-empty line, then not in INTERFILE format
            if isempty(info)
                error(message('images:interfileinfo:invalidFile', filename));

However I can import and view this file as an Interfile on a different piece of software called "Amide". So it is a valid Interfile. Any help would be appreciated.

Answer 1

[Bruno Ghini]

You probably solved this after so many years.

Interfile format gives us separate files for header and image. The file you are trying to get info from is the image file (*.img), but the info is in the header file (*.hdr). That's why you are getting an error message.