Click on image to view larger version.
Figure 3. One of serial slices from a coronal scan.(a) In the original (positive) sequence, the bladder, balloon and cuff of the artificial sphincter are of high-intensity, which can be segmented by simply applying a threshold to remove low-intensity signals, and then rendered in 3D surface display (Figure 4a). However, this will also remove the corpora cavernosa from being displayed because their intensities are below the threshold. (b) After inversing the grey scale, the corpora become high-intensity structures which can be displayed by simply applying another threshold (Figure 4b). In the 2D images, it is difficult to tell whether the cuff is fully sealed around the corpora cavernosa urethrae.
