Biomedical Engineering Reference
In-Depth Information
Figure 10.2:
A typical registration result of MR/Em (patient B).
quadrant, the surface is generated from the MR image using a marching cube
algorithm. In the cut-away view, the MR and Em are overlaid. The cut plane
position can also be changed by the cross-hair token. The three-dimensional
view can be manipulated to select the desired view direction. This visualization
tool provides an excellent means to check, visualize, and fuse the registration
results.
The cross-entropy maximization registration failed to register one MR/Tx
case. Thus, one Tx/Em set of indirect registration parameters were not com-
puted. The mean and standard deviation of indirect registration parameters
associating the Tx and Em images are reported in Table 10.3. Overall, the mean
and standard deviation are larger than those in the direct registration (see
Table 10.2), suggesting that errors in MR/Tx and MR/Em registrations may be
