Optimization of a quadrature birdcage coil for functional imaging of squirrel monkey brain at 9.4T |
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| Institution: | 1. Neuroscience Research Institute, Gachon University, Incheon, Republic of Korea;2. Department of Radiological Science, College of Health Science, Gachon University, Incheon, Republic of Korea;3. Institute of Neuroscience and Medicine - 4, Forschungszentrum Jülich, Jülich, Germany;1. Key Laboratory for Biomedical Engineering of Ministry of Education, Zhejiang University, Hangzhou, China;2. Interdisciplinary Institute of Neuroscience and Technology, School of Medicine, Zhejiang University, Hangzhou, China;4. School of Radiation Medicine and Protection, Soochow University, Suzhou, China;5. Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China;6. College of Electrical Engineering, Zhejiang University, Hangzhou, China |
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| Abstract: | A quadrature transmit/receive birdcage coil was optimized for squirrel monkey functional imaging at the high field of 9.4 T. The coil length was chosen to gain maximum coil efficiency/signal-to-noise ratio (SNR) and meanwhile provide enough homogenous RF field in the whole brain area. Based on the numerical simulation results, a 16-rung high-pass birdcage coil with the optimal length of 9 cm was constructed and evaluated on phantom and in vivo experiments. Compared to a general-purpose non-optimized coil, it exhibits approximately 25% in vivo SNR improvement. In addition to the volume coil, details about how to design and construct the associated animal preparation system were provided. |
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