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Dear All,    I have great deal of trouble converting scanner RAS to vertex RAS. 
I have tried a couple of formula (in the following) which had failed to produce 
accurate coordinate.
[tkR tkA tkrS] = [ScannerRAS 1] / (vox2ras * inv(tkrvox2ras))[tkR tkA tkrS] = 
[ScannerRAS 1] * inv(vox2ras0)

Both of these formula produced distorted coordinates. Please help!
Thanks,Tim
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