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Development of Birdcage Resonators for the 3 Tesla NMR Imaging System

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Abstract.

An optimized birdcage resonator configuration with a low-pass filter was designed and built to facilitate the acquisition of high-resolution three-dimensional images of small animals on the 3 T nuclear magnetic resonance imaging system. The birdcage resonator had a 12-element structure in order to ensure B 1 homogeneity over the image volume and for obtaining the maximum filling factor. The quality of the manufactured birdcage resonators was evaluated on the basis of the return loss following the matching and tuning process. The experimental magnetic resonance images of the phantoms were obtained by the various manufactured birdcage resonators to compare the signal-to-noise ratio (SNR) in accordance with the size of the objects. The ratio of the size of an object to the size of the coil was identified by the parameters that were estimated from the images of a phantom. This study demonstrated that the SNR could be different depending on the size of the object even if birdcage resonators have the same cylindrical forms.

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Authors and Affiliations

  1. Department of Biomedical Engineering, Kangnam St. Mary's Hospital, College of Medicine, Catholic University of Korea, Seoul, Korea

    J.-W. Lee, B.-Y. Choe, D.-C. Woo, S.-I. Yoon, S.-T. Hong, M.-H. Yoon & C.-B. Choi

  2. Department of Radiation Oncology, College of Medicine, Seoul National University, Seoul, Korea

    S.-N. Huh

Authors
  1. J.-W. Lee
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  2. B.-Y. Choe
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  3. D.-C. Woo
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  4. S.-I. Yoon
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  5. S.-T. Hong
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  6. M.-H. Yoon
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  7. C.-B. Choi
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  8. S.-N. Huh
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Additional information

Authors' address: Bo-Young Choe, Department of Biomedical Engineering, Kangnam St. Mary's Hospital, College of Medicine, Catholic University of Korea, 505 Banpo-Dong, Seocho-Gu, Seoul 137-040, Korea

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Lee, JW., Choe, BY., Woo, DC. et al. Development of Birdcage Resonators for the 3 Tesla NMR Imaging System. Appl Magn Reson 32, 311–319 (2007). https://doi.org/10.1007/s00723-007-0016-1

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  • DOI: https://doi.org/10.1007/s00723-007-0016-1

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