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http://dx.doi.org/10.7742/jksr.2021.15.4.565

MRI Enhancement using Perovskite Material for B1 Field Control at 7T  

Kim, Yong-Tae (Lee Gil Ya Cancer and Diabetes Institute & Department of Pre-Medicine, Gachon University School of Medicine)
Kim, Joo-Yeon (Department of Research Equipment Operation, Korea Basic Science Institute)
Baek, Hyeon-Man (Lee Gil Ya Cancer and Diabetes Institute & Department of Pre-Medicine, Gachon University School of Medicine)
Publication Information
Journal of the Korean Society of Radiology / v.15, no.4, 2021 , pp. 565-573 More about this Journal
Abstract
The spatial distribution of electromagnetic fields in the human body can be adjusted by using high dielectric materials. This method has a complementary compared to other methods. However, it can be used as a powerful dielectric shimming tool in certain applications. It can be manufactured in a geometrically free shape and a pad manufactured according to the purpose can be applied without any change of the system. Especially in ultrahigh magnetic field (UHF) MRI, the clinical high dielectric pad used to increase the intensity of the transmit (B1+) and receive (B1-) fields, which has low sensitivity due to the high operating frequency, has great potential. In addition, there are few studies applied to UHF MRI. Therefore, in this study, a high dielectric material pad made of calcium titanate suspension was developed in the laboratory. And the signal increase of clinically useful images was confirmed in various protocols of UHF 7T MRI.
Keywords
Dielectric shimming; Perovskite; Ultrahigh magnetic field; Signal-to-noise ratio;
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