Journal: Quantitative Imaging in Medicine and Surgery

Article Title: Evaluation of four computed tomography reconstruction algorithms using a coronary artery phantom

doi: 10.21037/qims-23-1204

Figure Lengend Snippet: Peak CT number and CNR at different stenoses and reconstruction algorithms

Article Snippet: The images were reconstructed using the following four reconstructions: hybrid iterative reconstruction (HIR) (AIDR3De Standard; Canon Medical Systems), MBIR (FIRST Cardiac Standard; Canon Medical Systems), DLR (AiCE Cardiac Standard; Canon Medical Systems), and 2nd generation DLR (PIQE Cardiac Standard; Canon Medical Systems).

Techniques: Standard Deviation

Journal: Quantitative Imaging in Medicine and Surgery

Article Title: Evaluation of four computed tomography reconstruction algorithms using a coronary artery phantom

doi: 10.21037/qims-23-1204

Figure Lengend Snippet: Comparison of the peak CT number in each reconstruction method. In the case of 25% stenosis, significant differences are found between 2nd generation DLR and MBIR, DLR and MBIR, as well as DLR and HIR. However, for 50% and 75% stenosis, no statistically significant differences are found among the different reconstruction methods. ****, P<0.001. CT, computed tomography; HIR, hybrid iterative reconstruction; MBIR, model based iterative reconstruction; DLR, deep learning-based reconstruction.

Article Snippet: The images were reconstructed using the following four reconstructions: hybrid iterative reconstruction (HIR) (AIDR3De Standard; Canon Medical Systems), MBIR (FIRST Cardiac Standard; Canon Medical Systems), DLR (AiCE Cardiac Standard; Canon Medical Systems), and 2nd generation DLR (PIQE Cardiac Standard; Canon Medical Systems).

Techniques: Comparison, Computed Tomography

Journal: Quantitative Imaging in Medicine and Surgery

Article Title: Evaluation of four computed tomography reconstruction algorithms using a coronary artery phantom

doi: 10.21037/qims-23-1204

Figure Lengend Snippet: Comparison of the CNR in each reconstruction method. At all stenosis levels, 2nd generation DLR shows a very high CNR. ****, P<0.05. CNR, contrast-to-noise ratio; HIR, hybrid iterative reconstruction; MBIR, model based iterative reconstruction; DLR, deep learning-based reconstruction.

Article Snippet: The images were reconstructed using the following four reconstructions: hybrid iterative reconstruction (HIR) (AIDR3De Standard; Canon Medical Systems), MBIR (FIRST Cardiac Standard; Canon Medical Systems), DLR (AiCE Cardiac Standard; Canon Medical Systems), and 2nd generation DLR (PIQE Cardiac Standard; Canon Medical Systems).

Techniques: Comparison

Journal: Quantitative Imaging in Medicine and Surgery

Article Title: Evaluation of four computed tomography reconstruction algorithms using a coronary artery phantom

doi: 10.21037/qims-23-1204

Figure Lengend Snippet: MPR images of coronary vessel model reconstructed by 4 reconstruction techniques. HIR, hybrid iterative reconstruction; MBIR, model based iterative reconstruction; DLR, deep learning-based reconstruction; MPR, multiplanar reformation.

Article Snippet: The images were reconstructed using the following four reconstructions: hybrid iterative reconstruction (HIR) (AIDR3De Standard; Canon Medical Systems), MBIR (FIRST Cardiac Standard; Canon Medical Systems), DLR (AiCE Cardiac Standard; Canon Medical Systems), and 2nd generation DLR (PIQE Cardiac Standard; Canon Medical Systems).

Techniques:

Journal: Quantitative Imaging in Medicine and Surgery

Article Title: Evaluation of four computed tomography reconstruction algorithms using a coronary artery phantom

doi: 10.21037/qims-23-1204

Figure Lengend Snippet: MPR images of coronary vessel model reconstructed by 4 reconstruction techniques. Luminal contour and stepped stenosis (arrows) and plaque contour (arrowheads) are clearly depicted with substantially reduced noise on 2nd generation DLR compared with other reconstructions. HIR, hybrid iterative reconstruction; MBIR, model based iterative reconstruction; DLR, deep learning-based reconstruction; MPR, multiplanar reformation.

Article Snippet: The images were reconstructed using the following four reconstructions: hybrid iterative reconstruction (HIR) (AIDR3De Standard; Canon Medical Systems), MBIR (FIRST Cardiac Standard; Canon Medical Systems), DLR (AiCE Cardiac Standard; Canon Medical Systems), and 2nd generation DLR (PIQE Cardiac Standard; Canon Medical Systems).

Techniques:

Journal: Quantitative Imaging in Medicine and Surgery

Article Title: Evaluation of four computed tomography reconstruction algorithms using a coronary artery phantom

doi: 10.21037/qims-23-1204

Figure Lengend Snippet: Profile curve in the lumen with 25%, 50%, and 75% stenoses. 2nd generation DLR showed steepest increase in CT number in the profile curve especially in the mild stenosis (25% plaque). The profile curve in the bottom rows show the same data of the top rows on an expanded x and y axis. CT, computed tomography; HIR, hybrid iterative reconstruction; MBIR, model based iterative reconstruction; DLR, deep learning-based reconstruction.

Article Snippet: The images were reconstructed using the following four reconstructions: hybrid iterative reconstruction (HIR) (AIDR3De Standard; Canon Medical Systems), MBIR (FIRST Cardiac Standard; Canon Medical Systems), DLR (AiCE Cardiac Standard; Canon Medical Systems), and 2nd generation DLR (PIQE Cardiac Standard; Canon Medical Systems).

Techniques: Computed Tomography

Journal: Quantitative Imaging in Medicine and Surgery

Article Title: Evaluation of four computed tomography reconstruction algorithms using a coronary artery phantom

doi: 10.21037/qims-23-1204

Figure Lengend Snippet: ERS at different stenoses and reconstruction algorithms

Article Snippet: The images were reconstructed using the following four reconstructions: hybrid iterative reconstruction (HIR) (AIDR3De Standard; Canon Medical Systems), MBIR (FIRST Cardiac Standard; Canon Medical Systems), DLR (AiCE Cardiac Standard; Canon Medical Systems), and 2nd generation DLR (PIQE Cardiac Standard; Canon Medical Systems).

Techniques:

Journal: Quantitative Imaging in Medicine and Surgery

Article Title: Evaluation of four computed tomography reconstruction algorithms using a coronary artery phantom

doi: 10.21037/qims-23-1204

Figure Lengend Snippet: Comparison of the ERS in each reconstruction method. At all stenosis levels, 2nd generation DLR tends to show high ERS. ****, P<0.05. ERS, edge rise slope; HIR, hybrid iterative reconstruction; MBIR, model based iterative reconstruction; DLR, deep learning-based reconstruction; 2nd generation DLR, 2nd generation deep learning-based reconstruction.

Article Snippet: The images were reconstructed using the following four reconstructions: hybrid iterative reconstruction (HIR) (AIDR3De Standard; Canon Medical Systems), MBIR (FIRST Cardiac Standard; Canon Medical Systems), DLR (AiCE Cardiac Standard; Canon Medical Systems), and 2nd generation DLR (PIQE Cardiac Standard; Canon Medical Systems).

Techniques: Comparison

Journal: Quantitative Imaging in Medicine and Surgery

Article Title: Evaluation of four computed tomography reconstruction algorithms using a coronary artery phantom

doi: 10.21037/qims-23-1204

Figure Lengend Snippet: Comparison of the graininess, sharpness, and lumen visibility in each reconstruction method. 2nd generation DLR scored higher than the HIR, MBIR, and DLR on all three items. ****, P<0.05. HIR, hybrid iterative reconstruction; MBIR, model based iterative reconstruction; DLR, deep learning-based reconstruction.

Article Snippet: The images were reconstructed using the following four reconstructions: hybrid iterative reconstruction (HIR) (AIDR3De Standard; Canon Medical Systems), MBIR (FIRST Cardiac Standard; Canon Medical Systems), DLR (AiCE Cardiac Standard; Canon Medical Systems), and 2nd generation DLR (PIQE Cardiac Standard; Canon Medical Systems).

Techniques: Comparison

Journal: International Journal of Chronic Obstructive Pulmonary Disease

Article Title: Iterative reconstruction for quantitative computed tomography analysis of emphysema: consistent results using different tube currents

doi: 10.2147/COPD.S74810

Figure Lengend Snippet: Comparisons of quantitative pulmonary measurements using different tube current and reconstruction settings (n=22)

Article Snippet: All major CT vendors have released their original IR techniques, which include Sinogram Affirmed Iterative Reconstruction (SAFIRE) and Advanced Modeled Iterative Reconstruction (ADMIRE) by Siemens Healthcare, Adaptive Statistical Iterative Reconstruction (ASIR) and Model Based Iterative Reconstruction (MBIR) by GE Healthcare, Adaptive Iterative Dose Reduction using Three Dimensional Processing (AIDR3D) by Toshiba Medical Systems, and Iterative Model Reconstruction (IMR) by Philips Healthcare.

Techniques:

Journal: International Journal of Chronic Obstructive Pulmonary Disease

Article Title: Iterative reconstruction for quantitative computed tomography analysis of emphysema: consistent results using different tube currents

doi: 10.2147/COPD.S74810

Figure Lengend Snippet: Example of emphysema measurements made by the workstation used in this study. Notes: Low attenuation areas (LAA, < −950 HU) are shown as red-colored areas. For this case (81 year old male, 62 kg), when using AIDR3D, measured LAA% results were 6.8% at 240 mA, 7.7% at 120 mA, and 8.0% at 60 mA. When not using AIDR3D (ie, when using FBP), LAA% results were 9.2% at 240 mA, 12.0% at 120 mA, and 15.3% at 60 mA. Note that LAA% measurements were obtained automatically for the entire lung and not from these single axial images. Abbreviations: LAA%, percent low attenuation area; AIDR3D, Adaptive Iterative Dose Reduction using Three Dimensional Processing; FBP, filtered-back projection; HU, Hounsfield unit.

Article Snippet: All major CT vendors have released their original IR techniques, which include Sinogram Affirmed Iterative Reconstruction (SAFIRE) and Advanced Modeled Iterative Reconstruction (ADMIRE) by Siemens Healthcare, Adaptive Statistical Iterative Reconstruction (ASIR) and Model Based Iterative Reconstruction (MBIR) by GE Healthcare, Adaptive Iterative Dose Reduction using Three Dimensional Processing (AIDR3D) by Toshiba Medical Systems, and Iterative Model Reconstruction (IMR) by Philips Healthcare.

Techniques:

Journal: International Journal of Chronic Obstructive Pulmonary Disease

Article Title: Iterative reconstruction for quantitative computed tomography analysis of emphysema: consistent results using different tube currents

doi: 10.2147/COPD.S74810

Figure Lengend Snippet: Image noise analysis. Notes: At each tube current, greater image noise was observed on scans with filtered-back projection (FBP; without AIDR3D) than on those with AIDR3D. An FBP scan at 60 mA showed the greatest image noise. Note that each AIDR3D and FBP pair at three tube current settings was reconstructed from a single set of raw data. Abbreviations: AIDR3D, Adaptive Iterative Dose Reduction using Three Dimensional Processing; SD, standard deviation; HU, Hounsfield unit.

Article Snippet: All major CT vendors have released their original IR techniques, which include Sinogram Affirmed Iterative Reconstruction (SAFIRE) and Advanced Modeled Iterative Reconstruction (ADMIRE) by Siemens Healthcare, Adaptive Statistical Iterative Reconstruction (ASIR) and Model Based Iterative Reconstruction (MBIR) by GE Healthcare, Adaptive Iterative Dose Reduction using Three Dimensional Processing (AIDR3D) by Toshiba Medical Systems, and Iterative Model Reconstruction (IMR) by Philips Healthcare.

Techniques: Standard Deviation

Journal: International Journal of Chronic Obstructive Pulmonary Disease

Article Title: Iterative reconstruction for quantitative computed tomography analysis of emphysema: consistent results using different tube currents

doi: 10.2147/COPD.S74810

Figure Lengend Snippet: Correlations between patients’ body weights and measurement differences among three tube current settings

Article Snippet: All major CT vendors have released their original IR techniques, which include Sinogram Affirmed Iterative Reconstruction (SAFIRE) and Advanced Modeled Iterative Reconstruction (ADMIRE) by Siemens Healthcare, Adaptive Statistical Iterative Reconstruction (ASIR) and Model Based Iterative Reconstruction (MBIR) by GE Healthcare, Adaptive Iterative Dose Reduction using Three Dimensional Processing (AIDR3D) by Toshiba Medical Systems, and Iterative Model Reconstruction (IMR) by Philips Healthcare.

Techniques: