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PubMed · 16342913

Ray tracing analysis of overlapping objects in refraction contrast imaging.

Masatsugu Hirano·Katsuhito Yamasaki·Hiroshi Okada·Takashi Sakurai·Takeshi Kondoh·Tetsuro Katafuchi·Kazuro Sugimura·Sohei Kitazawa·Riko Kitazawa·Sakan Maeda·Shinichi Tamura
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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.

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AngiographyArtifactsComputer SimulationContrast MediaHumansModels, TheoreticalMonte Carlo MethodRadiographic Image EnhancementRefractometryScattering, RadiationX-RaysJournal Article

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Masatsugu Hirano, Katsuhito Yamasaki, Hiroshi Okada, Takashi Sakurai, Takeshi Kondoh, Tetsuro Katafuchi, Kazuro Sugimura, Sohei Kitazawa, Riko Kitazawa, Sakan Maeda, Shinichi Tamura. 2005. Ray tracing analysis of overlapping objects in refraction contrast imaging.. https://pubmed.ncbi.nlm.nih.gov/16342913/

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