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http://dx.doi.org/10.7742/jksr.2019.13.1.31

Evaluation of Image Usability by SEMAC Turbo Factor Change using Susceptibility Artifact Reduction  

Choi, Young-Jae (Department of Radiology, Seoul National University Hospital)
Kim, Sang-Hyun (Department of Radiological Science, Shinhan University)
Publication Information
Journal of the Korean Society of Radiology / v.13, no.1, 2019 , pp. 31-37 More about this Journal
Abstract
The study analyzes Non SEMAC and SEMAC to reduce susceptibility artifacts that may occur when performing magnetic resonance imaging(MRI) of metal patients. The Foot and Ankle Phantom was used as the experimental tool and the 3.8 cm general screw was used to make the magnetic susceptibility artifact. The experimental equipment was used 3.0T Magnetom Skyra and the area was measured with the 17th image where the signal off is the most noticeable in the obtained image. Statistical analysis was performed using the SPSS(Ver.25) program and the significance was assessed by the Wilcoxon Signed Rank Test. As a result, the area of Non SEMAC which is the lowest signal was $289.53{\pm}23.07197mm$. When the Turbo Factor was changed to 3, 4, and 5 after SEMAC use, it decreased to $125.02{\pm}7.45875mm$, $120.96{\pm}12.01704mm$ and $108.79{\pm}16.53498mm$, respectively. In conclusion, this study demonstrates that Using SEMAC with Turbo Factor effectively reduces the susceptibility artifacts.
Keywords
MRI; Susceptibility Artifact; SEMAC; Turbo Factor;
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