Recent advances in image reconstruction, coil sensitivity calibration, and coil array design for SMASH and generalized parallel MRI

  • Daniel K. Sodickson
  • Charles A. McKenzie
  • Michael A. Ohliger
  • Ernest N. Yeh
  • Mark D. Price
Article
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Abstract

Parallel magnetic resonance imaging (MRI) techniques use spatial information from arrays of radiofrequency (RF) detector coils to accelerate imaging. A number of parallel MRI techniques have been described in recent years, and numerous clinical applications are currently being explored. The advent of practical parallel imaging presents various challenges for image reconstruction and RF system design. Recent advances in tailored SiMultaneous Acquisition of Spatial Harmonics (SMASH) image reconstructions are summarized. These advances enable robust SMASH imaging in arbitrary image planes with a wide range of coil array geometries. A generalized formalism is described which may be used to understand the relations between SMASH and SENSE, to derive typical implementations of each as special cases, and to form hybrid techniques combining some of the advantages of both. Accurate knowledge of coil sensitivities is crucial for parallel MRI, and errors in calibration represent one of the most common and the most pernicious sources of error in parallel image reconstructions. As one example, motion of the patient and or the coil array between the sensitivity reference scan and the accelerated acquisition can lead to calibration errors and reconstruction artifacts. Self-calibrating parallel MRI approaches that address this problem by eliminating the need for external sensitivity references are reviewed. The ultimate achievable signal-to-noise ratio (SNR) for parallel MRI studies is closely tied to the geometry and sensitivity patterns of the coil arrays used for spatial encoding. Several parallel imaging array designs that depart from the traditional model of overlapped adjacent loop elements are described.

Keywords

Parallel MRI: SMASH SENSE RF coil arrays Rapid imaging 
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References

  1. [1]
    Carlson JW. An algorithm for NMR imaging reconstruction based on multiple RF receiver coils. J Magn Reson 1987;74:376–80.Google Scholar
  2. [2]
    Hutchinson M, Raff U. Fast MRI data acquisition using multiple detectors. Magn Reson Med 1988;6(1):87–91.PubMedCrossRefGoogle Scholar
  3. [3]
    Kelton JR, Magin RL, Wright SM. An algorithm for rapid image acquisition using multiple receiver coils. Eighth Annual Meeting of the Society for Magnetic Resonance in Medicine. Amsterdam, The Netherlands, 1989:1172.Google Scholar
  4. [4]
    Kwiat D, Einav S, Navon G. A decoupled coil detector array for fast image acquisition in magnetic resonance imaging. Med Phys 1991;18(2):251–65.PubMedCrossRefGoogle Scholar
  5. [5]
    Carlson JW, Minemura T. Imaging time reduction through multiple receiver coil data acquisition and image reconstruction. Magn Reson Med 1993;29(5):681–7.PubMedCrossRefGoogle Scholar
  6. [6]
    Ra JB, Rim CY. Fast imaging using subencoding data sets from multiple detectors. Magn Reson Med 1993;30(1): 142–5.PubMedCrossRefGoogle Scholar
  7. [7]
    Sodickson DK, Manning WJ. Simultaneous acquisition of spatial harmonics (SMASH): fast imaging with radiofrequency coil arrays. Magn Reson Med 1997;38(4):591–603.PubMedCrossRefGoogle Scholar
  8. [8]
    Pruessmann KP, Weiger M, Scheidegger MB, Boesiger P. SENSE: sensitivity encoding for fast MRI. Magn Reson Med 1999;42(5):952–62.PubMedCrossRefGoogle Scholar
  9. [9]
    Lee RF, Westgate CR, Weiss RG, Bottomley PA. An analytical SMASH procedure (ASP) for sensitivity-encoded MRI. Magn Reson Med 2000;43(5):716–25.PubMedCrossRefGoogle Scholar
  10. [10]
    Kyriakos WE, Panych LP, Kachcr DF, Westin CF, Bao SM, Mulkern RV, Jolesz FA. Sensitivity profiles from an array of coils for encoding and reconstruction in parallel (SPACE RIP). Magn Reson Med 2000;44(2):301–8.PubMedCrossRefGoogle Scholar
  11. [11]
    Griswold MA, Jakob PM, Nittka M, Goldfarb JW, Haase A. Partially parallel imaging with localized sensitivities (PILS). Magn Reson Med 2000;44(4):602–9.PubMedCrossRefGoogle Scholar
  12. [12]
    Heidemann RM, Griswold MA, Haase A, Jakob PM. VD-AUTO-SMASH imaging. Magn Reson Med 2001;45(6):1066–74.PubMedCrossRefGoogle Scholar
  13. [13]
    Sodickson DK, McKenzie CA. A generalized approach to parallel magnetic resonance imaging. Med Phys 2001;28(8):1629–43.PubMedCrossRefGoogle Scholar
  14. [14]
    Sodickson DK, Griswold MA, Jakob PM. SMASH imaging. Magn Reson Imaging Clin North Am 1999;7(2):1–18.Google Scholar
  15. [15]
    Sodickson DK. Tailored SMASH image reconstructions for robust in vivo parallel MR imaging. Magn Reson Med 2000;44(2):243–51.PubMedCrossRefGoogle Scholar
  16. [16]
    McKenzie CA, Yeh EN, Sodickson DK. Improved spatial harmonic selection for SMASH image reconstructions, Magn Reson Med, 2001;46(4):831–836.PubMedCrossRefGoogle Scholar
  17. [17]
    McKenzie CA. Ohliger MA. Yeh EN, Price MD, Sodickson DK. Coil-by-coil image reconstruction with SMASH, Magn Reson Med, 200l;46(3):619–623.PubMedCrossRefGoogle Scholar
  18. [18]
    Stuber M. Botnar RM, Danias PG, Sodickson DK, Kissinger KV, Van Cauteren M, De Becker J, Manning WJ. Double-oblique free-breathing high resolution three-dimensional coronary magnetic resonance angiography. J Am Coll Cardiol 1999;34(2):524–31.PubMedCrossRefGoogle Scholar
  19. [19]
    Botnar RM, Stuber M, Danias PG, Kissinger KV, Manning WJ. Improved coronary artery definition with T2-weighted, free-breathing, three-dimensional coronary MRA. Circulation 1999;99(24):3139–48.PubMedGoogle Scholar
  20. [20]
    Sodickson DK. A generalized basis approach to spatial encoding with coil arrays: SMASH-SENSE hybrids and improved parallel MRI at high accelerations. Eighth Scientific Meeting of the International Society for Magnetic Resonance in Medicine. Denver, Colorado, USA, 2000;272.Google Scholar
  21. [21]
    Wang Y. Description of parallel imaging in MRI using multiple coils. Magn Reson Med 2000;44(3):495–9.PubMedCrossRefGoogle Scholar
  22. [22]
    Marquesuzaa H, McKenzie CA, Blake MA, Li W, Edelman RR, Sodickson DK. Simultaneous acquisition of spatial harmonics (SMASH): application of a new fast MRI technique for abdominal imaging. 86th Scientific Assembly and Annual Meeting of the Radiological Society of North America. Chicago, IL, USA, 2000.Google Scholar
  23. [23]
    Jakob PM, Griswold MA, Edelman RR, Sodickson DK. AUTO-SMASH: a self-calibrating technique for SMASH imaging. MAGMA 1998;7:42–54.PubMedCrossRefGoogle Scholar
  24. [24]
    McKenzie CA, Price MD, Yeh EN, Ohliger MA, Sodickson DK. New approaches to self-calibrating parallel imaging. Ninth Scientific Meeting of the International Society for Magnetic Resonance in Medicine. Glasgow, Scotland, 2001;7.Google Scholar
  25. [25]
    Griswold MA, Jakob PM, Edelman RR, Sodickson DK. A multicoil array designed for cardiac SMASH imaging. MAGMA 2000;10:105–13.PubMedCrossRefGoogle Scholar
  26. [26]
    Bankson JA, Griswold MA, Wright SM, Sodickson DK. SMASH imaging with an eight element multiplexed RF coil array. MAGMA 2000;10:93–104.PubMedCrossRefGoogle Scholar
  27. [27]
    Weiger M, Pruessmann KP, Leussler C, Roschmann P, Boesiger P. Specific coil design for SENSE: a six-element cardiac array. Magn Reson Med 2001;45(3):495–504.PubMedCrossRefGoogle Scholar
  28. [28]
    Lee RF, Westgate CR, Weiss RG, Newman DC, Bottomlcy PA. Planar strip array (PSA) for MRI. Magn Reson Med 2001;45(4):673–83.PubMedCrossRefGoogle Scholar
  29. [29]
    Hajnal JV, Larkman DJ, Herlihy DJ. An array that exploits phase for SENSE imaging. Eighth Scientific Meeting of the International Society for Magnetic Resonance in Medicine. Denver, Colorado, USA. 2000;1719.Google Scholar
  30. [30]
    Ohliger MA. Greenman R, McKenzie CA, Sodickson DK. Concentric coil arrays for spatial encoding in parallel MRI. Ninth Scientific Meeting of the International Society for Magnetic Resonance in Medicine. Glasgow. Scotland, 2001;21.Google Scholar
  31. [31]
    Willig J, Brown R, Eagan T, Shvartsman S. Perfectly sinusoidal SMASH field shapes from birdcage sectors. Ninth Scientific Meeting of the International Society for Magnetic Resonance in Medicine. Glasgow. Scotland. 2001;696.Google Scholar

Copyright information

© Elsevier Science B.V 2002

Authors and Affiliations

  • Daniel K. Sodickson
    • 1
    • 3
  • Charles A. McKenzie
    • 2
  • Michael A. Ohliger
    • 3
  • Ernest N. Yeh
    • 3
  • Mark D. Price
    • 3
  1. 1.Department of Medicine, Cardiovascular DivisionBeth Israel Deaconess Medical Center and Harvard Medical SchoolBostonUSA
  2. 2.Department of RadiologyBeth Israel Deaconess Medical Center and Harvard Medical SchoolBostonUSA
  3. 3.Harvard-MIT Division of Health Sciences and TechnologyBostonUSA

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