The Transactions of the Korean Institute of Electrical Engineers D (대한전기학회논문지:시스템및제어부문D)

The Korean Institute of Electrical Engineers (대한전기학회)
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Gradient Waveform Synthesizer in Magnetic Resonance Imaging System using Digital Signal Processors

DSP를 이용한 자기공명영상시스템의 경사자계 파형 발생기

  • Go, Gwang-Hyeok (Dept.of Electronics Engineering, Wonkwang University) ;
  • Gwon, Ui-Seok (Dept.of Electronics Engineering, Wonkwang University) ;
  • Kim, Chi-Yeong (Dept.of Electronics Engineering, Wonkwang University) ;
  • Kim, Hyu-Jeong (Dept.of Electronics Engineering, Wonkwang University) ;
  • Kim, Sang-Muk (Dept.of Electronics Engineering, Wonkwang University) ;
  • An, Chang-Beom (Dept.of Electronics Engineering, Wonkwang University)
  • Published : 2000.01.01
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Abstract

In this paper, we develop a TMS320C31 (60MHz) digital signal processor (DSP) board to synthesize gradient waveforms for Spiral Scan Imaging (SSI), which is one of the ultra fast magnetic resonance imaging (MRI) methods widely used. In SSI, accurate gradient waveforms are very essential to high quality magnetic resonance images. For this purpose, sampling rate for synthesizing the gradient waveforms is set twice as high as the data sampling rate. With the developed DSP boards accurate gradient waveforms are obtained. Ultra fast spiral scan imaging with the developed with the developed DSP board is currently under development.

Keywords

References

  1. P. Mansfield, 'Multi-planar image formation using NMR spin echoes,' J. Phys. C, vol. 10, pp. 155-158, 1977 https://doi.org/10.1088/0022-3719/10/3/004
  2. C.B. Ahn, J.H. Kim, and Z.H. Cho, 'High-Speed spiral-scan echo planar NMR imaging-I,' IEEE Trans. Med. Imag., vol. 5, pp. 1-6, 1986 https://doi.org/10.1109/TMI.1986.4307732
  3. C.H. Meyer, B.S. Hu, D.G. Nishimura, A. Macovski, 'Fast spiral coronary artery imaging,' Magn. Reson. Med., vol. 2, pp. 202-213, 1992 https://doi.org/10.1002/mrm.1910280204
  4. D.G. Nishimura, P. Irarrazabal, C.H. Meyer, 'A velocity k-space analysis of flow effects in echo planar and spiral imaging,' Magn. Reson. Med., vol. 33, pp. 549-556, 1995 https://doi.org/10.1002/mrm.1910330414
  5. C.B. Ahn, H.J. Kim, C.H. Oh, and C.Y. Kim, 'Reconstruction aspects of spiral scan magnetic resonance imaging,' SPIE. vol. 3336, pp. 141-152, 1998 https://doi.org/10.1117/12.317012
  6. 안창범, 김휴정, 오창현, 김치영, 'DC offset을 보정한 나선 주사 초고속 자기공명영상의 재구성 알고리즘,' 의공학회지, vol. 19, pp. 243-250, 1998
  7. TMS320C3x User's Guide, Texas Instruments, 1996
  8. 윤덕용, TMS320C31 마스터, Ohm사, 1998
  9. W.W. Smith and J.M. Smith, Handbook of real-time Fast Fourier Transforms, IEEE Press, New York, 1995
  10. TMS320C3x/C4x Assembly Language Tools, Texas Instruments, 1996