Journal of the Korean Physical Society

, Volume 73, Issue 1, pp 138–144 | Cite as

A Robust Self-navigation for Respiratory Gating in 3D Radial Ultrashort Echo-time Lung MRI using Concurrent Dephasing and Excitation

  • Jinil Park
  • Seokwon Lee
  • Taehoon Shin
  • Se-Hong Oh
  • Jang-Yeon ParkEmail author


Three-dimensional ultrashort echo-time (UTE) imaging with radial k-space acquisition is a well-known MR imaging technique that generates comparable lung images to X-ray and computed tomography (CT). Although researchers have sought to minimize the incidence of motion artifacts, there is still a need to accomplish further reduction of motion artifacts through respiratory gating. In this study, we introduce a robust self-navigation for respiratory gating in 3D radial UTE lung imaging especially based on concurrent dephasing and excitation (CODE). To reduce the baseline fluctuation of self-navigated respiratory signals as well as the dependence on the position of the navigating echoes in the k-space trajectories, both of which originate from varying degrees of steadystate condition outside the fully excited regions of a spin system in CODE-MRI, we proposed a new self-navigation method which applies dual navigating echoes successively in the superior-inferior direction and takes the second navigating echoes for respiratory-motion tracking. The phantom and human experimental results showed that the proposed method successfully suppressed the baseline fluctuations of the navigating-echo signals and the resulting respiratory signals, thereby reducing the respiratory-motion artifacts like blurring in the human lung images thanks to the improved respiratory gating.


Self-navigation Respiratory gating 3D radial ultrashort echo-time imaging Lung MRI 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. [1]
    P. C. Lauterbur, Nature 242, 190 (1973).ADSCrossRefGoogle Scholar
  2. [2]
    J. M. Pauly, S. M. Conolly, D. G. Nishimura and A. Macovski, Proc. Intl. Soc. Magn. Reson. Med. (1989), p. 28.Google Scholar
  3. [3]
    G. H. Glover, J. M. Pauly and K. M. Bradshaw, J. Magn. Reson. Imaging. 2, 47 (1992).CrossRefGoogle Scholar
  4. [4]
    D. Idiyatullin, C. Corum, J. Y. Park and M. Garwood, J. Magn. Reson. 181, 342 (2006).ADSCrossRefGoogle Scholar
  5. [5]
    Y. Wu et al., Magn. Reson. Med. 57, 554 (2007).CrossRefGoogle Scholar
  6. [6]
    J. Y. Park et al., Magn. Reson. Med. 67, 428 (2012).CrossRefGoogle Scholar
  7. [7]
    M. Weiger, K. P. Pruessmann and F. Hennel, Magn. Reson. med. 66, 379 (2011).CrossRefGoogle Scholar
  8. [8]
    D. M. Grodzki, P. M. Jakob and B. Heismann, Magn. Reson. med. 67, 510 (2012).CrossRefGoogle Scholar
  9. [9]
    K. M. Johnson, S. B. Fain, M. L. Schiebler and S. Nagle, Magn. Reson. Med. 70, 1241 (2013).CrossRefGoogle Scholar
  10. [10]
    S. H. Yoon, C. Lee, J. Park, J. M. Goo and J. Y. Park, Br J. Radiol. 91, 20170796 (2018).CrossRefGoogle Scholar
  11. [11]
    R. L. Ehman, M. T. McNamara, M. Pallack, H. Hricak and C. B. Higgins, Am. J. Roentgenol. 143, 1175 (1984).CrossRefGoogle Scholar
  12. [12]
    M. V. McConnell et al., Am. J. Roentgenol. 168, 1369 (1997).CrossRefGoogle Scholar
  13. [13]
    M. Puderbach et al., J. Radiol. 64, 345 (2007).Google Scholar
  14. [14]
    C. Stehning, P. Börnert, K. Nehrke, H. Eggers and M. Stuber, Magn. Reson. Med. 54, 476 (2005).CrossRefGoogle Scholar
  15. [15]
    J. Park, T. Shin, S. H. Yoon, J. M. Goo and J. Y. Park, NMR in biomedicine 29, 576 (2016).CrossRefGoogle Scholar
  16. [16]
    S. Coppo et al., Magn. Reson. Med. 74, 1306 (2015).CrossRefGoogle Scholar

Copyright information

© The Korean Physical Society 2018

Authors and Affiliations

  • Jinil Park
    • 1
  • Seokwon Lee
    • 1
  • Taehoon Shin
    • 2
  • Se-Hong Oh
    • 3
  • Jang-Yeon Park
    • 1
    • 4
    Email author
  1. 1.Department of Biomedical EngineeringSungkyunkwan UniversitySuwonKorea
  2. 2.Division of Mechanical and Biomedical EngineeringEwha Womans UniversitySeoulKorea
  3. 3.Division of Biomedical EngineeringHankuk University of Foreign StudiesYonginKorea
  4. 4.Center for Neuroscience Imaging ResearchInstitute for Basic ScienceSuwonKorea

Personalised recommendations