Three-dimensional spinal lateral protrusion reconstructing method based on orthophoric and lateral phases

Abstract

The invention relates to a three-dimensional spinal lateral protrusion reconstructing method based on orthophoric and lateral phases, belonging to the field of computer-aided measurement. The three-dimensional spinal lateral protrusion reconstructing method based on the orthophoric and lateral phases comprises the following specific steps of: firstly, setting beginning and ending seed points at gravity centers of a first thoracic vertebra and a last lumbar vertebra in an X-ray film in the orthophoric and lateral phases respectively; secondly, acquiring gravity centers of other vertebras by reasoning transversely and longitudinally; thirdly, fitting all the gravity center points into a curve by a curve fitting algorithm; fourthly, computing the included angle between the normal of each gravity center point on the curve and the horizontal line and the offset of each gravity center point relative to the first gravity center point, wherein the inclined angle between two gravity center points of orthophoric and lateral phases of a same vertebra and the offsets of the two gravity center points form a spatial three-dimensional parameter; and finally, according to the spatial three-dimensional parameter of each vertebra, translating and rotating the corresponding vertebra in a standard spinal model according to the three-dimensional parameter so as to form a spinal spatial three-dimensional model for pathological changes of a patient suffering from the spinal lateral protrusion. According to the three-dimensional spinal lateral protrusion reconstructing method, the time for performing X-ray scanning on the human body is shortened.

Description

technical field [0001] The invention relates to a three-dimensional reconstruction method for scoliosis based on the positive lateral phase, and develops an auxiliary scoliosis diagnosis system. The 3D imaging technology of the human spine is playing an increasingly important role in modern clinical medicine. The 3D model of scoliosis is reconstructed in the computer and displayed on the screen through the 3D reconstruction method based on the front and side phases. With computer interaction, doctors can easily perform operations such as translation, rotation, and scaling on the reconstructed spine, so that doctors can more accurately understand the details of spinal lesions, thereby helping doctors make accurate diagnoses and formulate correct surgical plans. Background technique [0002] At present, the known three-dimensional reconstruction of human tissues and organs at home and abroad is to obtain the tomographic two-dimensional image sequence of the spine directly from...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the existing 3D reconstruction methods, such as low efficiency and possible human injury, the present invention proposes a new method. This method does not need to obtain the patient's tomographic two-dimensional image sequence, but only needs two positive phase images of the patient. The patient's three-dimensional spine model can be reconstructed by using the lateral phase X-ray film and a standard spine model. Compared with the previous three-dimensional reconstruction algorithm that required hundreds of tomographic two-dimensional image sequences, the algorithm performed very well. Improve

Images