statistical iterative image reconstruction
<p>Low-dose computed tomography of urolithiasis in obese patients: a feasibility study to evaluate image reconstruction algorithms</p>
... CT image reconstruction algorithms have been developed and imple- mented across a range of clinical ...include statistical iterative reconstruction algorithms and the more recent ...
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Performance of Iterative Image Reconstruction in CT of the Paranasal Sinuses: A Phantom Study
... tive statistical iterative reconstruction on liver CT, recommended the use of balanced reconstruction preferences with a mild itera- tive influence to prevent a “waxy” image impression ...
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Phantom study of the impact of adaptive statistical iterative reconstruction (ASiRTM) on image quality for paediatric computed tomography
... other image qua- lity parameters we analysed LCD, spatial resolution and ...the image as this LCD loss seems to be dependent upon the noise in the acquired projection data; for regions of the image ...
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A pilot study using low-dose Spectral CT and ASIR (Adaptive Statistical Iterative Reconstruction) algorithm to diagnose solitary pulmonary nodules
... Methods: 62 patients with SPN (42 cases of benign SPN and 20 cases of malignant SPN, pathology confirmed) were scanned by spectral CT with a dual-phase contrast-enhanced method. The iodine and water concentration (IC and ...
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Lowering the Dose in Head CT Using Adaptive Statistical Iterative Reconstruction
... scout image with 100 kV (peak) and 20 mA was obtained to define the scan area prior to axial ...standard reconstruction algorithm for the posterior fossa; and 270-mA tube current, 1-second tube rotation ...
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STATISTICAL ANALYSIS OF TOMOGRAPHIC RECONSTRUCTION ALGORITHMS BY MORPHOLOGICAL IMAGE CHARACTERISTICS
... conventional reconstruction algorithms such as FBP or ...the reconstruction array corresponds to exactly one sinusoidal trajectory of the sinogram ...
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The Use of Adaptive Statistical Iterative Reconstruction in Pediatric Head CT: A Feasibility Study
... Adaptive Iterative Dose Reduction (Toshiba, Tochigi, Japan), and iDose (Philips Health- care, Best, the ...error” reconstruction methodologies that go through several iter- ations to create an “ideal ...
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Comparison of image quality between filtered back-projection and the adaptive statistical and novel model-based iterative reconstruction techniques in abdominal CT for renal calculi
... three reconstruction techniques are related to the assumptions that each method makes in producing the final image from the raw ...for image reconstruc- tion assuming the beam to be a perfect point ...
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Full Dose Reduction Potential of Statistical Iterative Reconstruction for Head CT Protocols in a Predominantly Pediatric Population
... RESULTS: Image noise texture was acceptable for up to 60% adaptive statistical iterative reconstruction for the soft reconstruction kernel (at both 100 and 120 kV[peak]) and up to 40% ...
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Cranial CT with Adaptive Statistical Iterative Reconstruction: Improved Image Quality with Concomitant Radiation Dose Reduction
... decreased image noise and increased contrast res- olution while allowing a lower radiation dose without experi- encing the more pronounced smoothing effect seen with higher ASIR ...using iterative-recon- ...
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CT of the chest with model-based, fully iterative reconstruction: comparison with adaptive statistical iterative reconstruction
... Model-based iterative reconstruction (MBIR) is the most advanced of the various iterative reconstruction schemes as it attempts to model the entire x-ray beam as it travels from the cathode to ...
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Reconstruction of Pet Image Based On Kernelized Expectation Maximization Method
... PET image reconstruction based on information theoretic similarity measures through priors [1] ...anatomical image in a maximum-a-posteriori (MAP) reconstruction algorithm ...[2].For ...
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Impact of Model Based Iterative Reconstruction on Image Quality of Contrast Enhanced Neck CT
... adaptive statistical iterative reconstruction and model-based iterative ...Objective image quality was assessed by comparing SNR, contrast-to-noise ratio, and background noise at levels ...
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Effect of Image Size on Threshold Selection for Segmentation of Dense Homogeneous Objects in Tomographic Reconstructions
... Accurate image segmentation is required for obtaining correct localization, shape, size of tomographic image objects, but it is difficult to obtain, in particular if one needs to segment objects that are ...
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Coronary Computed Tomographic Angiography at 80 kVp and Knowledge-Based Iterative Model Reconstruction Is Non-Inferior to that at 100 kVp with Iterative Reconstruction
... mean image quality scores between the two groups were compared using a linear mixed model considering the interaction ...qualitative image quality of CCTAs was measured using the linearly weighted κ ...All ...
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Quantitative Analysis of the Effect of Iterative Reconstruction Using a Phantom: Determining the Appropriate Blending Percentage
... adaptive statistical it- erative reconstruction (ASIR) in a reduced radiation dose while preserving a de- gree of image quality and texture that is similar to that of standard-dose computed ...
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Performance Analysis of Grey Level Fitting Mechanism based Gompertz Function for Image Reconstruction Algorithms in Electrical Capacitance Tomography Measurement System
... Landweber algorithm has good image reconstruction quality. However, it has the disadvantage of slow convergence therefore it not suitable for real-time imaging environment. Artificial neural network and ...
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HERMES MEDICAL SOLUTIONS
... HERMES hardware platform is based on the latest generation of PC’s with fl ex- ible display capabilities and mirrored internal drives for hosting Hermes Clas- sic line server applications. HERMES servers & clients can ...
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Fourier Based Forward and Back Projectors in Iterative Fan Beam Tomographic Image Reconstruction
... Most iterative algorithms require one forward projection and one back-projection each iteration, and these steps are the com- putational bottleneck. Using the Fourier-slice theorem for par- allel-beam tomography, ...
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Iterative Reconstruction in Head CT: Image Quality of Routine and Low Dose Protocols in Comparison with Standard Filtered Back Projection
... the iterative algo- rithm. However, with a median reconstruction interval of 68 seconds, clinical efficiency was not ...standard image quality at dose sav- ings in the range of 20% still represents a ...
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