Biomedical Engineering Reference
In-Depth Information
Figure 8.9: Nonuniform datasets merged to produce high-resolution level set
models, (top) laser scan of a figurine and (bottom) MR scan of a mouse
embryo.
volume dataset, and have the following resolutions: 26 × 128 × 128, 256 × 16 ×
128, and 256 × 128 × 13. The last image in Fig. 8.9 presents the result produced
by our multiscan segmentation method. The information in the first three scans
has been successfully used to create a level set model of the embryo with a
resolution of 256 × 128 × 130. The finer features of the mouse embryo, namely
its hands and feet, have been reconstructed.
8.4.2.3 Zucchini Dataset
The final dataset consists of three individual MRI scans of an actual zucchini. The
separate scans have been registered manually and are presented on the left side
of Fig. 8.10, each with a different color. The resolutions of the individual scans
are 28 × 218 × 188, 244 × 25 × 188, and 244 × 218 × 21. This image highlights
the rough alignment of the scans. The right side of Fig. 8.10 presents the result
of our level set segmentation. It demonstrates that our approach is able to extract
a reasonable model from multiple datasets that are imperfectly aligned.
Search WWH ::




Custom Search