Rick-

Thank you for your response. As a follow-up, If I want to use Dimon or to3d, I'll need to set the tpattern and I have a few questions about this.

With our data we pull out the following:

slice instance (DICOM field 0020,0013 (REL Instance Number))
slice location (DICOM field 0020,1041 (REL Slice Location))

If I have two sets of data, both axial collection, both sequential, with the following information:

slice instance slice location (descending)
-----------------------------------
1 2
2 1
3 0
4 -1
5 -2

slice instance slice location (ascending)
-----------------------------------
1 -2
2 -1
3 0
4 1
5 2

How would I set the corresponding tpattern? Would the descending example be seq-z (sequential in the minus direction) and the ascending example be seq+z (sequential in the plus direction)? Is the z-direction referring to increasing or decreasing z-values (slice location values)? I'm confused because the slice number layout in the man page shows slice number and inter-slice time (0-800 and 800-0) which I would interpret as slice 1-5 and 5-1.

-Joel