Artifact Reduction
High Resolution C Arm CT and Metal Artifact Reduction Software: A Novel Imaging Modality for Analyzing Aneurysms Treated with Stent Assisted Coil Embolization
... MATERIALS AND METHODS: Eight experimental aneurysms were created in 6 swine. Coil embolization of each aneurysm was performed by using a stent-assisted technique. High-resolution C-arm CT with intra-arterial contrast ...
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Magnetic resonance imaging of metal artifact reduction sequences in the assessment of metal-on-metal hip prostheses
... metal artifact reduction techniques in magnetic resonance (MR) have, in large part, been stimulated by the advent of soft tissue complications associated with modern metal-on-metal total hip ...metal ...
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Gaussian diffusion sinogram inpainting for X-ray CT metal artifact reduction
... which will obscure crucial information and reduce image quality. The academic com- munity believes the explanation of this phenomenon is beam hardening [1, 2]. Due to the pleochroism of the X-ray energy spectrum, the ...
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CT Metal Artifact Reduction in the Spine: Can an Iterative Reconstruction Technique Improve Visualization?
... 18 patients with spinal fusion and metal hardware, using dual- energy, virtual monochromatic kiloelectron volt images and metal artifact reduction algorithms. They used subjective 5-point image-quality and ...
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Implementation of iterative metal artifact reduction in the pre-planning-procedure of three-dimensional physical modeling
... overlapping artifact which is greatly reduced with the jaw ...effective artifact reduction method in both phantom and patient model is the dedi- cated iterative metal artifact reduction ...
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Clinical application of multi-material artifact reduction (MMAR) technique in Revolution CT to reduce metallic dental artifacts
... the artifact reduction can effectively eliminate the artifacts generated by metal fixtures, implants, metal clips, and spring coils implanted in different parts of the body and can also effectively assess ...
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Artifact Reduction of Different Metallic Implants in Flat Detector C Arm CT
... MATERIALS AND METHODS: We retrospectively reprocessed the flat detector CT data of 28 patients (15 men, 13 women; mean age, 55.6 years) after they underwent endovascular treatment (20 coiling ⫾ stent placement, 6 liquid ...
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Evaluation of CT Angiography Image Quality Acquired with Single-Energy Metal Artifact Reduction (SEMAR) Algorithm in Patients After Complex Endovascular Aortic Repair
... metal artifact reduction algorithm that can be used in a single-energy mode that does not complicate the CT acquisition protocol and does not increase radiation dose ...
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A metal artifact reduction method for a dental CT based on adaptive local thresholding and prior image generation
... metal artifact reduction (MAR) methods have been developed since the intro- duction of a medical CT to the clinical field decades ...metal artifact reduction and the computational cost [22, ...
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DEBLOCKING FILTER BASED ARTIFACT REDUCTION USING PSEUDO RANDOM NOISE MASKING
... PG Scholar [AE], Dept. of ECE, Er.Perumal Manimekalai College of Engineering, Hosur, India 1 Abstract: In this Project, we propose an algorithm for block artifact reduction for which Pseudo random noise ...
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A Post Processing Approach For Ringing-Artifact Reduction
... compression levels. The ringing is more dominant around textual regions while the blocking is more visible in natural images. Despite extensive research, reducing these artifacts in an effective manner still remains ...
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Metal artifact reduction on cervical CT images by deep residual learning
... metallic applicators are generally implanted inside the vaginal cavity of the patients with cervical cancer [2, 3]. However, these metallic implants have much higher attenuation coefficients than bones or soft tissue. ...
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A Novel Approach for Blocking Artifact Reduction in JPEG Compressed Images
... An attempt has been made in this paper to remove the annoying blocking artifacts from low-bit-rate JPEG compressed images. In the proposed technique the blocking artifacts are modeled as a function f(x,y) as shown in ...
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Combining dual-tree complex wavelets and multiresolution in iterative CT reconstruction with application to metal artifact reduction
... acceptance, affordability and accessibility of metallic restorations in forms of den- tal implants, fillings, crowns, screws, nails, prosthesis and plates in dentistry, and the increasing popularity of CBCT in ...
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DEMOSAICKING BASED ON IMAGE REFINEMENT USING GRADIENTS AND ARTIFACT REDUCTION USING WAVELETS
... When the luminance (green) information is known, the missing chrominance (red and blue) pixel values can be estimated from the interpolated red/green or blue/green ratios. This rule has[r] ...
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Metal Artifact Reduction for Clipping and Coiling in Interventional C Arm CT
... This reduction not only achieved an overall improved image quality without the disturbing artifacts but also allowed a diagnosis of areas previously obscured by these ...
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Adaptive Resolution Upconversion for Compressed Video Using Pixel Classification
... coding artifact reduction algorithms [8–11] blur details while sup- pressing various digital ...during artifact reduction cannot be recovered during resolution up- ...
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MR Angiographic Evaluation of Platinum Coil Packs at 1 5T and 3T: An In Vitro Assessment of Artifact Production: Technical Note
... MR angiographic studies were performed with a Siemens Sonata 1.5T systems (Erlangen, Germany) by using the stan- dard receive-only head coil and a Siemens Trio 3T system by using the CP-head transmit-receive coil. Seven ...
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Improved Image Quality in Head and Neck CT Using a 3D Iterative Approach to Reduce Metal Artifact
... metal artifact reduction were of moderate image quality, 16% of the sections with filtered back-projection, 5% with LIMAR, and 30% with iterative metal artifact reduction were of good image ...
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lobal ournal of ngineering cience and esearch anagement
... Signal Preprocessing: This stage performs Artifact Reduction; First part of figure-4 identifies this process. Original data normally contain a lot of artifacts or noise. Some noise resources are power line ...
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