Hi! I am Tabinda. I have been using the Fibercup phantom simulated using Mitk-Fiberfox. According to the ball-zeppelin model for phantom simulation given in "Fiberfox: Facilitating the Creation of Realistic White Matter Software Phantoms" (image attached), the isotropic compartment should not be having high intensity.
<http://mitk-users.1123740.n5.nabble.com/file/t737/zbmodel.png> According to the equation, the isotropic compartment is given as fv*exp(b*D1) where fv is the volume fraction for isotropic compartment, b is the b-value and D1 is the isotropic diffusion. Calculating these value results using the parameters provided in the paper gives 0.033 whereas the simulated phantom (B2.nii.gz- region outside the fibers) has the intensities between 800-850. Even after the simulation of k-space (equation attached-fraction of the simulated signal), how come the isotropic compartment ends up with high intensities? <http://mitk-users.1123740.n5.nabble.com/file/t737/kspace.png> Is there something which I am missing? Your timely response will be highly appreciated Thanks, Tabinda -- Sent from: http://mitk-users.1123740.n5.nabble.com/ ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ mitk-users mailing list mitk-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mitk-users
