Reduction of Metal Artifact with Dual-Energy CT: Virtual Monospectral Imaging with Fast Kilovoltage Switching and Metal Artifact Reduction Software
| Autor: | Jean-Michel Sverzut, Raphaël Campagna, Antoine Feydy, Eric Pessis, Henri Guerini, Jean-Luc Drapé |
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| Rok vydání: | 2015 |
| Předmět: |
medicine.medical_specialty
Scanner business.industry Image quality Radiography Radiation Dosage Visualization Radiography Dual-Energy Scanned Projection Metal Artifact Software Metals Humans Radiographic Image Interpretation Computer-Assisted Medicine Radiology Nuclear Medicine and imaging Orthopedics and Sports Medicine Computer vision Tomography Artificial intelligence Radiology Monochromatic color Artifacts Tomography X-Ray Computed business |
| Zdroj: | Seminars in Musculoskeletal Radiology. 19:446-455 |
| ISSN: | 1098-898X 1089-7860 |
| DOI: | 10.1055/s-0035-1569256 |
| Popis: | Imaging of patients with metal implants is a common activity for radiologists, and overcoming metal artifacts during computed tomography (CT) is still a challenge. Virtual monochromatic spectral (VMS) imaging with dual-energy CT has been reported to reduce beam-hardening metal artifact effectively. Dual-energy CT allows the synthesis of VMS images. Monochromatic images depict how the imaged object would look if the X-ray source produced X-ray photons at only a single-energy level. For this reason, VMS imaging improve image quality by reducing beam-hardening artifacts. Additional metal artifact reduction postprocessing such as metal artifact reduction software can be applied to improve the visualization of the bone-prosthesis interface, periprosthetic areas, and soft tissue near and far from the metal implant. This article summarizes how virtual monochromatic images are synthesized from dual-energy CT, and it describes and illustrates our clinical experience with a single-source dual-energy scanner with fast kilovoltage switching to reduce beam hardening in patients with metal implants. |
| Databáze: | OpenAIRE |
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