Cone-beam oral cavity CT (computed tomography) relative bone density measurement parameter analyzing method

The invention discloses a cone-beam oral cavity CT (computed tomography) relative bone density measurement parameter analyzing method and belongs to the technical field of medical instruments. A simulated human jaw bone density model is subjected to scanning and three-dimensional reconstruction by the aid of cone-beam oral cavity CT, relative jaw bone density of cross-sectional images is detected and reconstructed, and relative jaw bone density parameters are analyzed and compared. The method is characterized by including firstly, comparing measurement results with an actual calibration value and calculating the relevance of the measuring results and the actual calibration value; secondly, comparing multiple reconstruction results under the same condition by selecting the same layer to calculate the bone density parameters, and analyzing repeatability of the reconstruction results; finally, comparing the relative bone density parameters obtained by calculating different layers of reconstructed images and analyzing influence of layer selection on the measurement results. By means of combining multiple analyzing methods, precision and accuracy of the parameter analyzing results are effectively guaranteed.