Suppression of the CT Beam Hardening Streak Artifact Using Predictive Correction on Detector Data
نویسندگان
چکیده
منابع مشابه
Automatic Beam Hardening Correction For CT Reconstruction
In computed tomography (CT) the quality of reconstructed images depends on several reasons: the quality of the set-up calibration; precision of the mathematical model, used in the reconstruction procedure; the reconstruction technique used; quality of the numerical implementation of the reconstruction algorithm. Most of fast reconstruction algorithms use the X-ray monochromaticity assumption. I...
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We present a new method for correcting beam hardening artifacts in CT data. Software correction typically consists of a polynomial transform of the raw data, but determining optimal coefficients is not straightforward, especially if the material is not well known or characterized, as is the usual case when imaging geological materials. Our method lets an expert user guide an iterative optimizat...
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High-attenuation object-induced streaking and shadow artifacts in computerized tomography (CT) are somewhat connected to the misfit of the X-ray projection data to the range space of the Radon transform. This misfit is mainly due to the beam hardening factor of the projection data which is unavoidable for polychromatic sources. The major difficulty in dealing with the beam hardening-induced str...
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ژورنال
عنوان ژورنال: Universal Journal of Medical Science
سال: 2016
ISSN: 2331-6675,2331-6683
DOI: 10.13189/ujmsj.2016.040203