C-0807 - Dual energy images (DECT) versus Mono enegergetic images (MECT) for artefact reduction from metallic orthopedic implants.
C-0807 - Dual energy images (DECT) versus Mono enegergetic images (MECT) for artefact reduction from metallic orthopedic implants.L. Pedone1, L. Filograna1, M. la Torre2, R. D'Amico1, N. Magarelli1, A. Leone1, C. Colosimo1; 1 Rome/IT 2 San Severo/IT Type: Scientific Exhibit
Area of Interests: Musculoskeletal system, Bones, Computer applications
Imaging Techniques: CT-High Resolution, CT, Image manipulation / Reconstruction
Procedures: Physics, Technical aspects, Computer Applications-Detection, diagnosis
Special Focuses: Prostheses, Artifacts, Kv imaging
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Aims and objectives: The aim of this study is to assess the performances of dual-energy CT (DECT) in reducing metal artefacts in bodies with knee orthopaedic devices and compare the quality of the images of monoenergetic reconstructions CT (MECT).
Methods and materials: All examinations were performed on a dual-source CT (Somatom Definition Flash, Siemens Medical, Forchheim, Germany). In the dual-energy CT (DECT) scans, the tube currents were manually selected in each examination to keep the volume CT dose index fixed at 20.0 mGy. The dose of 20.0 mGy for extremit[...]
Results: The inter-reader agreement for qualitative assessment of degree of artefacts and overall image quality with the four-point Likert scale was excellent (0.933, p<0.001). Qualitative analyses showed statistically significant differences between monoenergetic DECT extrapolated images and DECT VS MECT[...]
Conclusion: Conclusions This study demonstrates that dual energy images (DECT) are qualitative better than monoenergetic (MECT) in order to reduce metallic artefacts from orthopaedic implants and improve image quality.
Personal information: Luigi Pedone Resident Radiologist Policlinico "A.Gemelli" L.go F. Vito 1, Rome Email: email@example.com
References: Lee MJ, Kim S, Lee SA, et al. Overcoming artifacts from metallicorthopedic implants at high-field-strength MR imaging and multidetector CT. Radiographics. 2007;27:791–803. Watzke O, Kalender WA. A pragmatic approach to metal artifactreduction in CT: merging of metal artifact reduced images. Eur Radi[...]