I am thinking about using the co-reg function to measure geometric
distortions in volumetric data. Essentially I would like to image a
phantom regularly and measure distortions that may be caused by
equipment variation over time.
Is it possible to get roll, pitch, yaw, shear and scale or something
similar from the spm_coreg function that I can use?
Running spm_coreg from the command line gives me 6 rigid body rotations
where I would have expected 12 as seen in the GUI version.
I am assuming that my phantom will be stable and positioned in exactly
the same spot in the scanner each time.
Thanks in advance,
Gordon
--
Gordon D. Waiter PhD CSci MIPEM CPhys MInstP
MRI Physicist
Department of Radiology
University of Aberdeen
Research MRI Centre
Lilian Sutton Building
Foresterhill
Aberdeen
AB25 2ZD
Tel: +44 (0)1224 559725
Fax: +44 (0)1224 559718
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www.abdn.ac.uk/radiology
University of Aberdeen Open Day - Tuesday 23rd August 2005
For more information visit our website www.abdn.ac.uk/openday or
freephone 0800 027 1495
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