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Related Experiment Videos

Simple analytic spiral K-space algorithm.

G H Glover1

  • 1Center for Advanced MR Technology at Stanford, Department of Diagnostic Radiology, Stanford University School of Medicine, Stanford, California 94305-5488, USA. gary@s-word.stanford.edu

Magnetic Resonance in Medicine
|August 10, 1999
PubMed
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This study presents a simplified, closed-form solution for designing spiral k-space trajectories in MRI. This approximation facilitates real-time trajectory prescription on scanners with limited computational power.

Area of Science:

  • Medical Imaging
  • Magnetic Resonance Imaging (MRI)

Background:

  • Designing spiral k-space trajectories for MRI is computationally intensive.
  • Exact designs require solving differential equations, hindering real-time application on less powerful scanners.

Purpose of the Study:

  • To develop a closed-form approximate solution for interleaved Archimedean spiral trajectories.
  • To enable easier real-time prescription of spiral MRI trajectories.

Main Methods:

  • Derived a closed-form approximate solution for spiral k-space trajectories.
  • Incorporated both slew rate-limited and amplitude-limited regimes into the approximation.

Main Results:

  • The approximate solution closely matches the exact design of spiral k-space trajectories.

Related Experiment Videos

  • The method simplifies real-time prescription for MRI scanners.

    • Conclusions:

    • A practical, approximate solution for spiral k-space trajectory design is presented.
    • This approach improves the feasibility of real-time trajectory prescription in MRI.