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Quantitative Measurements Versus Receiver Operating ...
RATIONALE AND OBJECTIVES: This study aimed to evaluate the correlation of quantitative measurements with visual grading regression (VGR) and receiver operating characteristics (ROC) analysis in computed tomography (CT) images reconstructed with iterative reconstruction. MATERIALS AND METHODS: CT scans on a liver phantom were performed on CT ......
Comparative study of different image reconstruction methods
Algebraic reconstruction technique of iterative reconstruction projection is defined in terms of system of linear equation. Many analytical and iterative methods are available. In this paper FBP analytical method and different iterative methods (kaczmarz, randomize kaczmarz, L 1 and L 2 norm) are used to reconstruct the image....
Quantitative and qualitative evaluation of hybrid ...
As a potential solution to this problem, iterative reconstruction (IR) is a technique that has been developed by several vendors as a method that can allow a reduction in radiation dose. 2-8 Although these techniques iteratively reduce noise in the image space, raw data, or both, IR techniques have also been reported to produce changes in image ...
OSA | Comparative study of iterative reconstruction ...
Comparative study of iterative reconstruction algorithms for missing cone problems in optical diffraction tomography ... J. Jung, J. Heo, S. Cho, S. Lee, G. Chang, Y. Jo, H. Park, and Y. Park, “Quantitative phase imaging techniques for the study of cell pathophysiology: from principles to applications,” Sensors 13, 4170–4191 (2013 ......
A comparative study based on image quality and clinical ...
implemented a new comparative analysis method associating image quality, radia - tion dose, and patient size with radiotherapy task performance, with the purpose of guiding the clinical radiotherapy usage of CT reconstruction algorithms. The iDose. 4. iterative reconstruction algorithm was selected as the target for comparison, wherein
A comparative study of reconstruction methods applied to ...
A comparative study of reconstruction methods applied to Neutron Tomography To cite this article: D. Micieli et al 2018 JINST 13 C06006 View the article online for updates and enhancements. Related content Investigation of various reconstruction parameters for algebraic reconstruction technique in a newly developed chest digital tomosynthesis...
State of the Art: Iterative CT Reconstruction Techniques ...
So-called hybrid algorithms combine both analytical and iterative methods in different combinations. In one arrangement, the initial image is generated by the use of analytical methods (raw data domain), and iterative methods are focused to optimize image characteristics, for example, noise, in the image domain....
Effect of iterative reconstruction techniques on image ...
Purpose: We aimed to evaluate the quality of chest computed tomography (CT) images obtained with low-dose CT using three iterative reconstruction (IR) algorithms. Methods: Two 64-detector spiral CT scanners (HDCT and iCT) were used to scan a chest phantom containing 6 ground-glass nodules (GGNs) at 11 radiation dose levels. CT images were reconstructed by filtered back projection or three IR ...
The effect of different image reconstruction techniques on ...
Iterative reconstruction had favourable results for the DECT analysis: a significantly smaller spread for each material in the ρ e-Z eff space and lower Z eff and ρ e residuals (on average 24 and 25% lower, respectively). In terms of image quality assurance, the techniques FDK, Iterative FDK and SART provided acceptable results.
 Iterative Methods for Image Reconstruction
Iterative Methods for Image Reconstruction Jeffrey A. Fessler EECS Department The University of Michigan ISBI Tutorial Apr. 6, 2006 0.0 c J. Fessler, March 15, 2006 p0intro These annotated slides were prepared by Jeff Fessler for attendees of the ISBI tutorial on statisti-cal image reconstruction methods.
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