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A flexible fast spin echo triple-echo Dixon technique.

Jong Bum Son1, Ken-Pin Hwang1, John E Madewell2

  • 1Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.

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|March 17, 2016
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Summary
This summary is machine-generated.

A new flexible fast spin echo triple-echo Dixon (FTED) technique offers efficient and reliable water-fat separation. This advanced imaging method provides greater flexibility for various MRI applications, including T2- and T1-weighted imaging.

Keywords:
Dixon imagingfast spin echofast triple-echo Dixonjoint processingwater and fat

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Area of Science:

  • Magnetic Resonance Imaging
  • Medical Physics

Background:

  • Fast spin echo (FSE) and Dixon imaging are established MRI techniques.
  • Limitations exist in current FSE and Dixon methods regarding flexibility and efficiency.

Purpose of the Study:

  • To develop a flexible fast spin echo triple-echo Dixon (FTED) technique.
  • To enhance water and fat separation capabilities in MRI.

Main Methods:

  • Modified FSE pulse sequence with fast-switching bipolar readout gradients.
  • Utilized three echoes for phase-shifted water and fat signals.
  • Employed a region growing-based two-point Dixon phase correction algorithm for image processing.
  • Implemented and evaluated the technique on 1.5T and 3.0T scanners.

Main Results:

  • Achieved high data acquisition efficiency comparable to standard FSE.
  • Demonstrated flexibility in scan protocols.
  • Ensured processing consistency with the joint Dixon phase correction algorithm.
  • Obtained reliable and uniform water-fat separation across all test cases.

Conclusions:

  • The flexible FTED technique combines advantages of FSE and Dixon imaging.
  • Offers superior flexibility for fat-suppressed T2-weighted and T1-weighted imaging applications.
  • Represents an advancement in MRI for precise water and fat separation.