Metal streak artifacts in X-ray computed tomography: a simulation study
Bruno De ManLMedical Image Computing, ESAT-PSI, K.U. Leuven, Leuven, BelgiumJohan NuytsDepartment of Nuclear Medicine, K.U. Leuven, Leuven, BelgiumPatrick DupontDepartment of Nuclear Medicine, K.U. Leuven, Leuven, BelgiumG MarchalDepartment of Radiology, K.U. Leuven, Leuven, BelgiumPaul Suetens
1999en
ABI
Аннотация
Metal streak artifacts are an important problem in X-ray computed tomography. A high-resolution 2D fan-beam computed tomography simulator is presented. Several potential causes of metal streak artifacts are studied using phantom measurements and simulations. Beam hardening, scatter, noise and exponential edge-gradient effects are identified as important causes of metal streak artifacts. Furthermore, aliasing effects and object motion can be also responsible for certain metal streak artifacts.
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