inspect

The inspect module, also described elsewhere, provides fast, simple and powerful means of visualisation of registered datasets. When Matlab version 6.X is available, the new transparancy features are utilised for image overlays (Figure 24). The overlayed image is calculated on the fly, meaning that time consuming writing of resliced volume datasets to disk is not needed.

Figure 24: Axial, coronal and sagital overlay images

If overlays are not prefered, the registered images can be visualised 'side-by-side' instead (Figure 25).

Figure 25: Axial view, overlay and side-by-side view.

Selection of visualisation mode is done by pressing the 'Transparancy' button. Pressing the x/y/z buttons will select sagital, coronal and axial views of the registered images. The shown slice number can be adjusted by changing the value of the vertical slider at the bottom of the window. For easy, systematic inspection of the full volume dataset, a 'movie' feature is available. Firstly, the slices to view are selected by pressing the 'Mov. Int.' (Movie interval) button. A dialogue appears (Figure 26), with adjustable minimum/maximum slice and slice step length.

Figure 26: Adjustment, 'movie' interval

Pressing the 'Movie' button will now show a little movie of the selected, registered slices.