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Related Experiment Videos

TE interleaving: new multisection imaging technique.

J E Bishop1, D B Plewes

  • 1Sunnybrook Health Science Centre, North York, Ontario, Canada.

Journal of Magnetic Resonance Imaging : JMRI
|September 1, 1991
PubMed
Summary
This summary is machine-generated.

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A novel T2-weighted multisection imaging technique enhances section acquisition efficiency by interleaving data collection. This method improves speed but may slightly reduce signal-to-noise ratio and requires careful artifact control.

Area of Science:

  • Magnetic Resonance Imaging (MRI)
  • Medical Physics
  • Radiology

Background:

  • Multisection imaging in MRI allows for faster data acquisition.
  • T2-weighted imaging is crucial for visualizing certain pathologies.
  • Existing multisection techniques face limitations in efficiency and speed.

Purpose of the Study:

  • To introduce a new pulse sequence for T2-weighted multisection imaging.
  • To enhance the efficiency of section acquisition per unit time.
  • To describe the implementation and characteristics of the novel sequence.

Main Methods:

  • Development of a T2-weighted spin-echo pulse sequence with interleaved excitation and data collection.
  • Modification of section-select and readout gradient waveforms.

Related Experiment Videos

  • Implementation of TE-interleaved (TEI) sequences with and without flow compensation.
  • Use of spoiler gradients to control artifacts.

    • Main Results:

    • The TE-interleaved (TEI) sequence increases section acquisition efficiency.
    • Secondary- and stimulated-echo artifacts were observed but controllable.
    • A slight reduction in signal-to-noise ratio for contiguous sections was noted.
    • Radio-frequency section interference effects are enhanced by the TEI sequence.

    Conclusions:

    • The TE-interleaved sequence offers improved efficiency for T2-weighted multisection MRI.
    • Artifacts and signal-to-noise ratio require consideration for optimal clinical application.
    • Further optimization may be needed to mitigate interference effects.