title: [Enhanced digitally reconstructed radiographs generated by ray tracing].
abstract: Digitally reconstructed radiographs (DRR) which greatly contribute to the quality control of radiotherapy are critical element in the process of virtual simulation in radiotherapy. In this paper, an algorithm based on ray tracing has been used to generate the DRR. By applying an exponential transformation to the electronic density determined by CT value, the generated DRR can be enhanced by adjusting the attenuation and the transformation parameter.
authors.affiliation: Institute of Nuclear Science and Technology, Key Laboratory of Radiation Physics and Technology, Ministry of Education, Sichuan University, Chengdu 610064, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Wang
authors.forename: Zhangwen
authors.initials: Z
authors.lastname: Wu
authors.forename: Conghua
authors.initials: C
authors.lastname: Zhang
authors.forename: Qing
authors.initials: Q
authors.lastname: Hou
mesh_terms: D003198:Computer Simulation; D019047:Phantoms, Imaging; D011856:Radiographic Image Enhancement / Q000379:methods*; D011857:Radiographic Image Interpretation, Computer-Assisted; D011880:Radiotherapy Planning, Computer-Assisted; D014057:Tomography, X-Ray Computed