First, select the whether you want to:
Straightened cervical cord image in coronal (left) and sagittal (right) views.
The straightened cord image will take its name from the input image, but with a suffix "Cord" added.
Note: normally, in the straightened cord image, the pixel size (pixel
width and pixel height) and field of view in the left-right and
anterior-posterior directions will be half that of the
input image. If you use a heavily cropped input image (cropped close to the cord in the
left-right or anterior-posterior directions), the straightened cord image may not contain
the whole of the spinal cord. In which case, you can create an image with the orginal
field-of-view and pixel sizes by selecting the
check-box.
.wrl
.
An example is shown below, with the VRML cord surface shown as a mesh against a background
of the cord image in orthogonal views.
Surface mesh of cervical cord.
Now click on the
button.
When the calculation is finished, a dialog will pop up, showing the cord volume between the
landmarks.
A report will detail the cord length, total volume and cross-sectional areas at regular intervals (in steps equal to the original slice thickness) down the cord. The cross-sectional areas are measured in a plane that is perpendicular to the local cord centre-line.
You will also see a pop-up graph dialog showing the cross-sectional area long the cord.