Measurement of Cross-Sectional Area of Spinal Canal through Coordinate Axis Rotation and Projection Transformation

Measurement of cross-sectional area of spinal canal is always the research focus in medicine, so it has become more and more important to find an efficient and rational method. This paper proposes a new method, which uses coordinate axis rotation and projection transformation to measure the area. The advantages of this method are: transform the 3D measurement into 2D, reduces the computation complexity, moreover, and simplifies the process of computation. Experiments prove that the method has small measurement difference, high reliability; and it can measure the cross-sectional area of vertebral canal precisely. It provides a more scientific and objective way for the measurement of cross-sectional area of spinal canal.