title: Ray tracing analysis of overlapping objects in refraction contrast imaging.
abstract: We simulated refraction contrast imaging in overlapping objects using the ray tracing method. The easiest case, in which two columnar objects (blood vessels) with a density of 1.0 [g/cm3], run at right angles in air, was calculated. For absorption, we performed simulation using the Snell law adapted to the object's boundary. A pair of bright and dark spot results from the interference of refracted X-rays where the blood vessels crossed. This has the possibility of increasing the visibility of the image.
authors.affiliation: Niihama National College of Technology, Yagumo, Ehime 792-8580, Japan.
authors.forename: Masatsugu
authors.initials: M
authors.lastname: Hirano
authors.forename: Katsuhito
authors.initials: K
authors.lastname: Yamasaki
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Okada
authors.forename: Takashi
authors.initials: T
authors.lastname: Sakurai
authors.forename: Takeshi
authors.initials: T
authors.lastname: Kondoh
authors.forename: Tetsuro
authors.initials: T
authors.lastname: Katafuchi
authors.forename: Kazuro
authors.initials: K
authors.lastname: Sugimura
authors.forename: Sohei
authors.initials: S
authors.lastname: Kitazawa
authors.forename: Riko
authors.initials: R
authors.lastname: Kitazawa
authors.forename: Sakan
authors.initials: S
authors.lastname: Maeda
authors.forename: Shinichi
authors.initials: S
authors.lastname: Tamura
mesh_terms: D000792:Angiography / Q000379:methods; D016477:Artifacts; D003198:Computer Simulation; D003287:Contrast Media; D006801:Humans; D008962:Models, Theoretical; D009010:Monte Carlo Method; D011856:Radiographic Image Enhancement / Q000379:methods*; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation; D014965:X-Rays
chemical_list: D003287:Contrast Media