Forskning
Udskriv Udskriv
Switch language
Region Hovedstaden - en del af Københavns Universitetshospital
Udgivet

Reconstruction strategy for echo planar spectroscopy and its application to partially undersampled imaging

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  1. Quantification of cerebral perfusion and cerebrovascular reserve using Turbo-QUASAR arterial spin labeling MRI

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  2. Coil profile estimation strategies for parallel imaging with hyperpolarized 13 C MRI

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  3. Gamma-aminobutyric acid edited echo-planar spectroscopic imaging (EPSI) with MEGA-sLASER at 7T

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  4. Comparison of prospective head motion correction with NMR field probes and an optical tracking system

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  5. Improved calculation of the equilibrium magnetization of arterial blood in arterial spin labeling

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  1. Coil profile estimation strategies for parallel imaging with hyperpolarized 13 C MRI

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  2. Inductive measurement and encoding of k-space trajectories in MR raw data

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  3. Invited talk: MR safety: Regulatory aspects

    Publikation: KonferencebidragKonferenceabstrakt til konferenceForskningpeer review

  4. Invited talk: Low-frequency MR Current Density Imaging (MRCDI) in the human brain

    Publikation: KonferencebidragKonferenceabstrakt til konferenceForskningpeer review

Vis graf over relationer
The most commonly encountered form of echo planar spectroscopy involves oscillating gradients in one spatial dimension during readout. Data are consequently not sampled on a Cartesian grid. A fast gridding algorithm applicable to this particular situation is presented. The method is optimal, i.e., it performs as well as the full discrete Fourier transform for band limited signals while allowing for use of the fast Fourier transform. The method is demonstrated for reconstruction of data that are partially undersampled in the time domain. The advantages of undersampling are lower hardware requirements or fewer interleaves per acquisition. The method is of particular interest when large bandwidths are needed (e.g., for high field scanning) and for scanners with limited gradient performance. The unavoidable artifacts resulting from undersampling are demonstrated to be acceptable for spectroscopy with long echo times.
OriginalsprogEngelsk
TidsskriftMagnetic Resonance in Medicine
Vol/bind44
Udgave nummer3
Sider (fra-til)412-417
Antal sider6
ISSN0740-3194
DOI
StatusUdgivet - 2000

ID: 32511644