Single‐breath‐hold venous or arterial flow‐suppressed pulmonary vascular MR imaging with phased‐array coils

Thomas K.F. Foo, James R. Macfall, H. Dirk Sostman, Cecil E. Hayes

Research output: Contribution to journalArticle

18 Scopus citations

Abstract

A method for acquiring pulmonary vascular magnetic resonance (MR) images with either venous or arterial flow suppression is described. The proposed method only marginally increases the overall imaging time compared with conventional flow-suppression techniques. This enables an acquisition to be completed within a single breath hold with some selectivity as to flow direction. Instead of applying a spatially selective presaturation pulse before each radio-frequency (RF) excitation pulse, the flow presaturation pulse is applied once every 16-20 RF excitation pulses. To avoid image artifacts and to maintain a steady state, each presaturation pulse interval is followed by a normal imaging segment but with data acquisition turned off. Overall imaging time is increased by two TR intervals for each presaturation segment. For a 256 x 128 matrix acquisition, venous flow presaturation increases overall imaging time by approximately 14 TR intervals, while arterial flow suppression increases imaging time by 10 TR intervals.

Original languageEnglish (US)
Pages (from-to)611-616
Number of pages6
JournalJournal of Magnetic Resonance Imaging
Volume3
Issue number4
DOIs
StatePublished - 1993

Keywords

  • Artifact
  • Flow suppression
  • Pulmonary arteries, MR, 944.121412
  • Pulmonary arteries, stenosis or obstruction, 944.77
  • Pulmonary veins, MR, 945.121412
  • Pulse sequences
  • Rapid imaging
  • Vascular studies

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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