Hi Rick,
Okay, both options work in the sense that the data now resembles a brain - after using the byte swap the entire image disappears though. In the case where it's 3Di the slider bar shows 260 images & I can slide through each of them. In the case of the 3Df the slider bar shows 8 images - appropriate for the number of slices. In the latter case, the image is not clear though. Hmmm.....
Rick, I have just been able to convert these files into analyze format. I know have one .img file and another .hdr. Could you tell me how to convert this into AFNI from this format?
Aimee