Magnetic resonance imaging of the thoracic cavity using a paused 3DFT acquisition technique

Robin L Stern, G. Allan Johnson, Carl E. Ravin

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

A new pulse sequence designed for magnetic resonance imaging of the entire thoracic cavity is described. This sequence, called 3DPAUSE, is a rapid three-dimensional Fourier transform (3DFT) sequence with periodic pauses for breathing and additional rf pulses after each pause to restore the magnetization to steady-state before data acquisition resumes. Cardiac motion artifacts are effectively removed by signal averaging. Respiratory motion artifacts are removed by breath hold. Image artifacts caused by an inadequate number of pauses or by inappropriate placement of the pauses within a scan are shown, and ways to avoid these artifacts are discussed. 3DPAUSE provides the ability to acquire three-dimensional arrays in the thoracic cavity with minimal artifacts from respiratory and cardiac motions in a clinically reasonable time.

Original languageEnglish (US)
Pages (from-to)747-753
Number of pages7
JournalMagnetic Resonance Imaging
Volume8
Issue number6
DOIs
StatePublished - 1990
Externally publishedYes

Keywords

  • Lung, MR studies
  • Magnetic resonance (MR) pulse sequences
  • Thorax, MR studies

ASJC Scopus subject areas

  • Biophysics
  • Clinical Biochemistry
  • Structural Biology
  • Radiology Nuclear Medicine and imaging
  • Condensed Matter Physics

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