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Hi, A vitamin E capsule (or similar) is what we've used in the past. It can be a bit hard to see on the EPI, but is normally visible if you look carefully for it. All the best, Mark On 18 Jun 2009, at 07:26, Xiaoxu Liu wrote: > Hi all, > > To make sure the L/R orientation is not flipped in the conversion and > processing, I want to attach a marker on the patient's forehead. The > ideal > marker is the one that could show up in both MPRAGE and EPI > sequence. I > tried to use a Gadolinium filled syringe as a marker but it can be > barely > seen in MPRAGE and cannot be seen in EPI. Do you have any > suggestions and > tricks? Thanks a lot. > > -Xiaoxu >