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> Thanks for the answer. I am sorry if I confused you that I am hacking the > code. I want to generate a Pseudo-T map using another image rendering > software called BrainSuite2 which read in analyze format files. I prefer > using uint16 format. So I was trying to see if I could read in the file > and convert to uint16, then use it for display. Actually, could I just > use the SPMt.img directly? Does it contain the Pseudo-T statistic if I > setup the program using variance smoothing? Thanks! You are correct. If you choose the pseudo-t test option, then SnPM writes a pseudo-t image as SPMt.img. This information is recorded in the "descrip" field in SPMt.hdr, and is displayed as a part of image info in "Display" in SPM2. So you can check whether your SPMt.img is a t-image or a pseudo-t image. Creating your own pseudo-t map is fine, but you have to be careful that a pseudo-t map is not the same as a smoothed t map. Rather, it is a contrast map divided by the sqrt of the corresponding variance image smoothed by a Gaussian filter. Good luck! -Satoru