||Scoliosis is a congenital disease caused by a complex three-dimensional
deformity of the spine. Traditionally, the disease is diagnosed by
measuring the angle between two vertebrae in the coronal plane, the
so called Cobb angle. Many methods have been suggested to obtain a
true measure of scoliosis in three dimensions. We suggest a method
inspired by image registration techniques to describe the entire curvature
using 3D image data from spiral Computed Tomography. The method lets
the user view three orthogonal slices of the dataset and interact
with them until they match each other visually, thus obtaining information
of the six degrees of freedom for a rigid body transformation. This has
been implemented in a program that could be run on any computer.
Comparison with another metod for calculating vertebrae angles have been
done. The other method has a more automatic approach.