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A Method for Correcting Bone Induced Artifacts in Computed Tomography Scanners
Abstract
A method that corrects for artifacts in X-ray transmission scanners created by the alteration of the energy spectrum by bone is described. The method involves two reconstructions of the pictures: the first establishes the approximate distribution of bone and the second enables the artifacts to be eliminated. The first reconstruction is needed to establish the total amount of bone along each ray. Assuming that the X-ray energy spectrum is known, it is shown how the line integrals can be corrected. The method was tested on several mathematical phantoms as well as on human head data. The nonlinear nature of the spectral artifacts is shown to produce streaks in certain phantoms.
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“the large extracranial metal components and dental cement of the implant can cause beam hardening that can appear as cupping, streaks, dark bands or flare in the µCT38–40.”
From Oxytocin neurons enable social transmission of maternal behaviour (2021) · cites this paper as [40]
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“To date, numerous beam hardening correction (BHC) methods have been proposed [13], [14], [15], [16], [17].”
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“The interests in correction of beam hardening artifacts induced by multi-material objects (especially bone) began since early days of CT imaging [34], [35], [31], [36], [33], [37], [38], [32], [18], [39], [40], [41], [42], [23], however, high order beam hardening artifacts are still present in CT images acquired on mo…”
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“In the scope of current work the main focus will be on the artifacts, arising due to the presence of strongly absorbing inclusions (such as metals) in the object under study – metal-like artifacts (MA) [15].”
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“…as polychromatic sources (non-ideal or monochromatic), caused by the following effects: beam hardening, aliasing, different materials in the same voxel (partial volume), displacement of the sample or of the equipment (Duerinckx & Macocski, 1978; Joseph & Spital, 1978; Ibbott, 1980; Granato, 1998).”
BackgroundA new method for cupping and scatter precorrection for flat detector CT
Grimmer, R., Maaß, C., & Kachelrieß, M. (2009) · 2006 IEEE Nuclear Science Symposium Conference Record · doi:10.1109/nssmic.2009.5401805 · Cited by 3
“In our case this would be the energy dependence of water and the correction that is applied in all clinical CT scanners is known as water precorrection [6].”
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“…the streaks artifacts caused by bone like substances at the same time, but it is usually necessary to use cumbersome physical experiments to determine the scale factor, (cid:2) 0 , in advance, which is subsequently used to convert the reconstruction value of bone tissue into bulk density [6, 7].”
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“This approach consists of applying a well-known classical technique for beam hardening correction proposed by Joseph and Spital [11], followed by TV minimization applied as a post-processing step.”
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“If the object is made up of different materials with low and high attenuation coefficients, the streak and spill-over (higher order) artifacts will also be visible [2][3].”
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“These techniques can be categorized into four types: linearization methods (Brooks and Di Chiro 1976, McDavid et al 1977, Joseph and Spital 1978, Rüegsegger et al 1978, Herman 1979, Nalcioglu and Lou 1979, Herman and Trivedi 1983, Robertson and Huang 1986, Meagher et al 1990, Kyriakou et al 2010),…”
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“To correct both cupping and dark bands, some works model the beam-hardening effect using knowledge about the X-ray spectrum together with an estimation of the tissue thicknesses traversed [3,4].”
MethodCalibration Method for Reducing Ring Artifacts in Energy Bin Images for Photon-Counting CT
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“…calibration approaches that aim to achieve additional objectives (often involving multiple materials), such as beam-hardening correction (BHC) [25], [26], [27] or material decomposition (MD) [28], [29], [30], [31], [32], also typically correct for pixel-to-pixel variations as part of the…”
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“Adaptive Beam Hardening Correction Here, the H-L consistency condition [4], [9] and bone correction [2] are combined to determine an optimal scaling factor 0 λ by minimizing the following objective function,”
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Metadata
- Authors
- Joseph, P. M., & Spital, R. D.
- Affiliations
- NewYork–Presbyterian Hospital (US)
- Venue
- Journal of Computer Assisted Tomography
- Published
- 1978-01
- Volume
- 2
- Issue
- 1
- Pages
- 100-108
- ISSN
- 0363-8715 (ISSN-L)
- OpenAlex
- W2000441297
- Cited by
- 281
- References
- 0
- Citations by year
- 2026: 7 · 2025: 4 · 2024: 10 · 2023: 6 · 2022: 13 · 2021: 6 · 2020: 9 · 2019: 12 · 2018: 17 · 2017: 10 · 2016: 10 · 2015: 9 · 2014: 10 · 2013: 10 · 2012: 13
- FWCI
- 8.33
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Computer Assisted Tomography (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Advanced X-ray and CT Imaging
- Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Medical Imaging Techniques and Applications
- Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Radiation Dose and Imaging
- Keywords
- bone artifacts, spectral artifacts, X-ray spectra, streak artifacts, head CT, image reconstruction, mathematical phantoms
- MeSH terms
- Bone and Bones, Humans, Mathematics, Models, Structural, Skull, Technology, Radiologic, Tomography, X-Ray Computed
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