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Evaluation of Algebraic Iterative Image Reconstruction Methods for Tetrahedron Beam Computed Tomography Systems

Joshua Kim, Huaiqun Guan, David Gersten, Tiezhi Zhang
2013 International Journal of Biomedical Imaging  
The modified SART reconstruction algorithms were able to mitigate the effects of using data generated at large cone angles and were also able to reconstruct CT images without the introduction of artifacts  ...  It has been shown that iterative reconstruction algorithms are better able to model irregular system geometries and that algebraic iterative algorithms in particular have been able to reduce cone artifacts  ...  Acknowledgments This work is supported in part by Oakland University and NIH SBIR Contract no. HHSN261201100045C. International Journal of Biomedical Imaging  ... 
doi:10.1155/2013/609704 pmid:23781236 pmcid:PMC3678434 fatcat:sakheflymzhvbpavq5gvrct4g4

Radiation dose reduction in medical x-ray CT via Fourier-based iterative reconstruction

Benjamin P. Fahimian, Yunzhe Zhao, Zhifeng Huang, Russell Fung, Yu Mao, Chun Zhu, Maryam Khatonabadi, John J. DeMarco, Stanley J. Osher, Michael F. McNitt-Gray, Jianwei Miao
2013 Medical Physics (Lancaster)  
.: Dose reduction in CT via Fourier-Based Iterative Reconstruction 031914-2 helical cone-beam CT data suggest that the combination of EST and ASSR produces reconstructions with higher image quality and  ...  The method is experimentally implemented on fan-beam CT and evaluated as a function of imaging dose on a series of image quality phantoms and anonymous pediatric patient data sets.  ...  Stanley Osher was supported by National Science Foundation (NSF) grants DMS0835863 and DMS0914561.  ... 
doi:10.1118/1.4791644 pmid:23464329 pmcid:PMC3598761 fatcat:e6pz6zubmbh47pctldpvxc23fq

Sparse-View X-Ray CT Reconstruction Using ℓ_1 Prior with Learned Transform [article]

Xuehang Zheng, Il Yong Chun, Zhipeng Li, Yong Long, Jeffrey A. Fessler
2019 arXiv   pre-print
Our results with the extended cardiac-torso (XCAT) phantom data and clinical chest data show that, for sparse-view 2D fan-beam CT and 3D axial cone-beam CT, PWLS-ST-ℓ_1 improves the quality of reconstructed  ...  images compared to the CT reconstruction methods using edge-preserving regularizer and ℓ_2 prior with learned ST.  ...  ACKNOWLEDGMENTS The authors thank GE Healthcare for providing the clinical data.  ... 
arXiv:1711.00905v3 fatcat:g7tomd7emfhb7all2f6ozuhn7i

Evaluation and Clinical Application of a Commercially Available Iterative Reconstruction Algorithm for CBCT-Based IGRT

Weihua Mao, Chang Liu, Stephen J. Gardner, Farzan Siddiqui, Karen C. Snyder, Akila Kumarasiri, Bo Zhao, Joshua Kim, Ning Winston Wen, Benjamin Movsas, Indrin J. Chetty
2019 Technology in Cancer Research and Treatment  
We have quantitatively evaluated the image quality of a new commercially available iterative cone-beam computed tomography reconstruction algorithm over standard cone-beam computed tomography image reconstruction  ...  The improved contrast for the CT images, in addition to reduced inherent scattering with fan-beam versus cone-beam acquisition, favors CT from a quantitative phantom analysis perspective.  ...  methods were applied to the itera-tive_CBCT reconstructor.  ... 
doi:10.1177/1533033818823054 pmid:30803367 pmcid:PMC6373994 fatcat:tgjayizvwfckthu6xqtnivc2a4

GPU based iterative CBCT for prospective motion compensated algorithm for radiation therapy

A. Biguri, M. Dosanjh, S. Hancock, M. Soleimani
2016 Radiotherapy and Oncology  
In the next step, the object was rotated every 10 degrees to obtain the 3D proton CT, and the iterative reconstruction method was used to reproduce the image.  ...  To improve the reconstruction at the material boundaries, additional local iterations will be applied. References: [1] U. Schneider and E.  ...  In the next step, the object was rotated every 10 degrees to obtain the 3D proton CT, and the iterative reconstruction method was used to reproduce the image.  ... 
doi:10.1016/s0167-8140(16)30023-8 fatcat:4xz36eq54vbyxk3e7jncaakbpu

Removing streak artifacts from ECG-gated reconstructions using deconvolution

Cyril Mory, Vincent Auvray, Bo Zhang, Michael Grass, Dirk Schäfer, Simon Rit, Françoise Peyrin, Philippe Douek, Loïc Boussel
2014 Journal of X-Ray Science and Technology  
Results are presented on simulated data in 2D parallel beam, 2D fan beam and 3D cone beam geometries.  ...  The aim of this paper is to compare two 4D cardiac CT reconstruction methods based on deconvolution, and to evaluate their practical benefits on two applications: cardiac micro CT and human cardiac C-arm  ...  Many thanks to Cristian T. Badea and Samuel Johnston for their reactivity and kindness in answering our questions.  ... 
doi:10.3233/xst-140423 pmid:24699351 fatcat:m4wtpp237bhp3c3jm4bsrlhtq4

Enhancement of breast calcification visualization and detection using a modified PG method in Cone Beam Breast CT

Jiangkun Liu, Ruola Ning, Weixing Cai, Ricardo Betancourt Benitez
2012 Journal of X-Ray Science and Technology  
In this work, the Papoulis-Gerchberg method was modified and implemented in Cone Beam Breast CT images to improve the visualization and detectability of calcifications.  ...  Cone Beam Breast CT is a promising diagnostic modality in breast imaging.  ...  Koning Corporation has licensed several patents from the University of Rochester, and seeks to commercialize medical imaging equipment utilizing the cone bean CT technology.  ... 
doi:10.3233/xst-2012-0322 pmid:22398591 pmcid:PMC3544933 fatcat:f6rovxizbnbuver7w6muewbzwq

Cone-Beam CT image contrast and attenuation-map linearity improvement (CALI) for brain stereotactic radiosurgery procedures

SayedMasoud Hashemi, Christopher Huynh, Arjun Sahgal, William Y Song, Håkan Nordström, Markus Eriksson, James G Mainprize, Young Lee, Mark Ruschin
2018 Journal of Applied Clinical Medical Physics  
In pre-processing we apply a shading and beam hardening artifact correction to the projections, and in post-processing step we correct the dome/capping artifact on reconstructed images caused by the spatial  ...  A Contrast and Attenuation-map Linearity Improvement (CALI) framework is proposed for cone-beam CT (CBCT) images used for brain stereotactic radiosurgery (SRS).  ...  The proposed method included a pre-processing step applied on the projection images, followed by a high spatial resolution iterative reconstruction method, 3 and post-processing the reconstructed image  ... 
doi:10.1002/acm2.12477 pmid:30338919 pmcid:PMC6236823 fatcat:jv4wzot6and77ftuwx6xqmgfyu

Front Matter: Volume 10132

2017 Medical Imaging 2017: Physics of Medical Imaging  
of dose calculation accuracy using clinical images 10132 0K Development and clinical translation of a cone-beam CT scanner for high-quality imaging of intracranial hemorrhage 10132 0L Lab-based x-ray  ...  motion phantoms based on clinical CT patient data [10132-66] SESSION 14 MODELING AND SIMULATIONS II: BREAST IMAGING 10132 1W High-resolution, anthropomorphic, computational breast phantom: fusion  ...  (Japan) Honorable Mention: Paper 10132-191, "Validation study of the thorax phantom Lungman for optimization purposes," Sunay Rodríguez Pérez, SCK CEN (Belgium) and KU Luven (Belgium) xxviii Proc. of SPIE  ... 
doi:10.1117/12.2276763 fatcat:5vgmgqm4izfdrl6p4itkq6fsjm

Unified reconstruction framework for multi-modal medical imaging

Di Dong, Jie Tian, Yakang Dai, Guorui Yan, Fei Yang, Ping Wu
2011 Journal of X-Ray Science and Technology  
of module reuse and inconvenience to method comparison.  ...  Corresponding medical image reconstruction algorithms, especially 3D reconstruction, play an important role in disease diagnosis and treatment assessment.  ...  The toolbox includes iterative and non-iterative algorithms for tomographic imaging (PET, SPECT, X-ray CT), methods for MRI reconstruction, iterative image restoration tools and so on.  ... 
doi:10.3233/xst-2010-0281 pmid:21422592 fatcat:dhhq56axpffh5kyl3twbx4qaga

Low-Dose and Scatter-Free Cone-Beam CT Imaging Using a Stationary Beam Blocker in a Single Scan: Phantom Studies

Xue Dong, Michael Petrongolo, Tianye Niu, Lei Zhu
2013 Computational and Mathematical Methods in Medicine  
Excessive imaging dose from repeated scans and poor image quality mainly due to scatter contamination are the two bottlenecks of cone-beam CT (CBCT) imaging.  ...  CS-based iterative reconstruction is finally carried out on the undersampled data to obtain scatter-free and low-dose CBCT images.  ...  Acknowledgments This work is supported by the Varian Management Research Agreement Grant and partially by the Natural Science Foundation of China (NSFC Grant no. 81201091).  ... 
doi:10.1155/2013/637614 pmid:24348742 pmcid:PMC3853243 fatcat:3qz6lhh7bvhh3cdoqf6fhtlblq

Front Matter: Volume 11312

Hilde Bosmans, Guang-Hong Chen
2020 Medical Imaging 2020: Physics of Medical Imaging  
clinical trials in 3D and 2D breast imaging with digital phantoms derived from clinical breast CT scans 11312 5A Quantitative evaluation of virtual monochromatic imaging for detection of microcalcifications  ...  CT, SPECT, PET, OCT, AND TOMOSYNTHESIS 3K Accelerated reconstruction for inverse geometry CT via derivative back-projection filtration POSTER SESSION: MACHINE LEARNING APPLIED TO IMAGING PHYSICS  ...  This award is co-sponsored by: The Medical Image Perception Society 2020 Recipients:  ... 
doi:10.1117/12.2570912 fatcat:vl6kcecvhvfr5ogs3og5czzvwq

Cone-beam transmission computed tomography for nonuniform attenuation compensation of SPECT images

S H Manglos, D A Bassano, F D Thomas
1991 Journal of Nuclear Medicine  
This paper develops and tests cone-beam transmission computed tomography (CB-CT) for attenuation compensation of SPECT images.  ...  CB-CT was implemented on a rotating gamma camera with a point source (1-2 mCi) of 99mTc, and a light-weight aluminum source holder. A cone-beam collimator may be used but is not required.  ...  Although iterative cone-beam reconstruction methods (39,43â€"48)exist and are more accurate, they require much longer execution times.  ... 
pmid:1880585 fatcat:yloy5xua5jhbvdc3yf4brbuufq

WE-E-201B-01: GPU-Based Fast Cone Beam CT Reconstruction from Undersampled and Noisy Projection Data Via Total Variation

X Jia, Y Lou, J Lewis, R Li, X Gu, C Men, W Song, S Jiang
2010 Medical Physics (Lancaster)  
Purpose: Cone-beam CT (CBCT) plays an important role in image guided radiation therapy (IGRT).  ...  The goal of this work is to develop a fast GPU-based algorithm to reconstruct CBCT from undersampled and noisy projection data so as to lower the imaging dose.  ...  Among various methods of this type, Total Variation (TV) method 6 has presented its tremendous power in CT reconstruction problems in both fan-beam 7 and cone-beam 8 geometries.  ... 
doi:10.1118/1.3469447 fatcat:kwt7njbxt5adzpponbrjnlfpba

Multi-Mounted X-Ray Computed Tomography

Jian Fu, Zhenzhong Liu, Jingzheng Wang, Li Zeng
2016 PLoS ONE  
Compared with the conventional single-mounted methods, it has the potential to improve the imaging efficiency and suppress the artifacts from the beam hardening and the scatter.  ...  It consists of a multi-mounted scanning geometry and the corresponding algebraic iterative reconstruction algorithm.  ...  Acknowledgments The experimental data set used for this proposed work was measured with the MMCT system in Beijing University of Aeronautics and Astronautics.  ... 
doi:10.1371/journal.pone.0153406 pmid:27073911 pmcid:PMC4830586 fatcat:djkuywf2nvg27el55momp66qym
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