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

Published

Journal Article

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.

Full Text

Cited Authors

  • Foo, TK; MacFall, JR; Sostman, HD; Hayes, CE

Published Date

  • July 1993

Published In

Volume / Issue

  • 3 / 4

Start / End Page

  • 611 - 616

PubMed ID

  • 8347954

Pubmed Central ID

  • 8347954

Electronic International Standard Serial Number (EISSN)

  • 1522-2586

International Standard Serial Number (ISSN)

  • 1053-1807

Digital Object Identifier (DOI)

  • 10.1002/jmri.1880030410

Language

  • eng