Using simulated annealing for 3D reconstruction of orthopedic fracture

Abstract

Three-dimensional (3D) reconstruction from two orthogonal images has been realized, and a Monte Carlo program MCNP4B has been applied to simulate the x-ray images. These two approaches can be applied to reconstruction of orthopedic fractures, using computed radiography images. The purpose of this paper is to utilize the information from pairs of orthogonal images at different stages of healing to generate a 3D reconstruction of the callus which builds up during the treatment, thus facilitating understanding and enabling assessment of the process of fracture healing. The reconstruction from Monte Carlo simulated images and x-ray images shows that this approach may be feasible in clinical practice.

A preliminary study for determination of three-dimensional root apex position of the maxillary teeth using camera calibration technology

“…Fourth, further studies should include more subjects and multiple measurements for interclass agreement and statistical analysis, and to improve the methodology further studies are needed in order to get the errors down and to perform additional experiments for determining the quantitative level of clinical acceptance. Finally, in 3D reconstruction from two orthogonal images, 26,27 3D estimation of the root apex can be defined by image integration of the posteroanterior and lateral cephalograms. In addition, future studies should include subjects treated with extraction and should estimate the apices of buccal roots of the bifurcate maxillary premolars and the mesiobuccal and distobuccal roots of the maxillary molars.…”

Theoretical Analysis of Rayleigh Backscattering Noise in Fiber Raman Amplifiers

“…Boundary-value problems cannot be solved analytically. In this paper, the simple shooting method [10] is used to numerically solve Eq. ( 1).…”