Reduction of metallic coil artifacts in CT angiography with metal artefact reduction (MAR) algorithm
نویسندگان
چکیده
منابع مشابه
Reduction of CT artifacts caused by metallic implants.
A technique to reduce metallic implant artifacts on computed tomography scans is presented. The implant boundaries are determined semiautomatically; the missing projection data are replaced by linear interpolation. The complete procedure requires 1-2 minutes per scan. Images with greatly improved quality were obtained in the presence of surgical clips and pelvic implants; success is limited in ...
متن کاملSegmentation of artifacts and anatomy in CT metal artifact reduction.
PURPOSE Metal objects present in x-ray computed tomography (CT) scans are accompanied by physical phenomena that render CT projections inconsistent with the linear assumption made for analytical reconstruction. The inconsistencies create artifacts in reconstructed images. Metal artifact reduction algorithms replace the inconsistent projection data passing through metals with estimates of the tr...
متن کاملEvaluation of a metal artifacts reduction algorithm applied to postinterventional flat panel detector CT imaging.
BACKGROUND AND PURPOSE Flat panel detector CT images are degraded by streak artifacts caused by radiodense implanted materials such as coils or clips. A new metal artifacts reduction prototype algorithm has been used to minimize these artifacts. The application of this new metal artifacts reduction algorithm was evaluated for flat panel detector CT imaging performed in a routine clinical settin...
متن کاملCT Reconstruction Using FBP with Sinusoidal Amendment for Metal Artefact Reduction
In this paper, a new method for metal artefact reduction in computed tomography is investigated, based on sinusoidal amendment. Each voxel in the scanned object corresponds to a sinusoidal curve in the projection data set. Some of the sinusoidal curves result from metal implant, which can be identified because the attenuation coefficient of the metal is much higher than that of human tissue, an...
متن کاملIs correction for metallic artefacts mandatory in cardiac SPECT/CT imaging in the presence of pacemaker and implantable cardioverter defibrillator leads?
Introduction: Metallic artifacts due to pacemaker/ implantable cardioverter defibrillator (ICD) leads in CT images can produce artifactual uptake in cardiac SPECT/CT images. The aim of this study was to determine the influence of the metallic artifacts due to pacemaker and ICD leads on myocardial SPECT/CT imaging. Methods: The study included 9 patients wh...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Diagnostic and Interventional Imaging
سال: 2019
ISSN: 2211-5684
DOI: 10.1016/j.diii.2019.02.002