Spine Visualisation

This visualisation controls the reslice location and also spine measurements. The first control can be dragged to move the out-of-plane position of the reslice in order to visualise the entire data set, and the following 'Flip reslice' button changes the left-right sense of the reslice.

After this are two controls which affect display in the 3D window. The first '3D in coronal plane' aligns the 3D window with the current spine references, so that it is showing the coronal plane, with the up direction consistent with the anatomy. The following 'display landmark names' checkboxes toggles display of the names of the spine landmarks in the 3D window, useful if the display is becoming cluttered.

Following these controls there is a table of measurements for each vertebra. If the required three landmarks are defined for a vertebra, measurements will be shown and highlighted, otherwise zeros are displayed against the window background colour. This data, along with the location of each landmark, can be exported to a comma-separated file using the 'Export data' button. The 'Save image' button saves a copy of the current reslice.

An estimate of the coronal Cobb angle is also displayed underneath the table. This is estimated by looking for maximal curvature (deduced from the lateral offset of neighbouring vertebrae) superior and inferior to the vertebra with maximal lateral offset, and displayed in the 3D window. Alternatively, the selection of the superior and inferior vertebrae from which to calculate the Cobb angle can be over-ridden by clicking on one vertebra label in the table, and then ctrl-clicking on another.