Motion artifact suppression technique (MAST) for MR imaging

Pradip M. Pattany, Jeffrey J. Phillips, Lee C. Chiu, James D. Lipcamon, Jeffrey L. Duerk, James M. McNally, Surya N. Mohapatra

Research output: Contribution to journalArticle

183 Scopus citations

Abstract

A technique has been developed that significantly improves the image resolution and reduces motion artifacts in conventional two-dimensional Fourier transform and three-dimensional Fourier transform magnetic resonance imaging sequences. Modifications on the gradient waveforms completely refocus the transverse magnetization at the echo time, regardless of the motion occurring between the time of the 90° radiofrequency excitation and the echo time (within-view). This accomplishes suppression of motion artifacts and regains the signal from flowing blood and CSF. Images of the head, abdomen, chest, and spine are reproduced which show the increase in signal and anatomical detail that would otherwise be degraded and lost in artifact noise. This technique has reduced the practical difficulty of obtaining clinically diagnostic T2-weighted abdominal images. It also has allowed diagnostic quality T1- and T2-weighted images to be obtained with one acquisition per view, thus reducing the total scan time.

Original languageEnglish (US)
Pages (from-to)369-377
Number of pages9
JournalJournal of computer assisted tomography
Volume11
Issue number3
DOIs
StatePublished - 1987

Keywords

  • Artifacts
  • Magnetic resonance imaging, physics
  • Magnetic resonance imaging, techniques

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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    Pattany, P. M., Phillips, J. J., Chiu, L. C., Lipcamon, J. D., Duerk, J. L., McNally, J. M., & Mohapatra, S. N. (1987). Motion artifact suppression technique (MAST) for MR imaging. Journal of computer assisted tomography, 11(3), 369-377. https://doi.org/10.1097/00004728-198705000-00001