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Continuous inversion angiography
Author(s) -
Roberts D. A.,
Bolinger L.,
Detre J. A.,
Insko E. K.,
Berge P.,
Leigh J. S.
Publication year - 1993
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.1910290508
Subject(s) - inversion (geology) , magnetic resonance angiography , nuclear magnetic resonance , magnetic resonance imaging , electromagnetic coil , physics , radiology , materials science , medicine , geology , paleontology , structural basin , quantum mechanics
A subtractive time‐of‐flight technique for magnetic resonance anglography is described. In this approach, the arterial supply to an organ is inverted in a steady‐state fashion by applying off‐resonance irradiation in the presence of a linear magnetic field gradient. An angiogram is formed by subtracting an image acquired with arterial inversion from a control image acquired with no arterial inversion. A single coil is used to apply both the inversion and observation pulses. Intracranial angiograms obtained from normal volunteers using a two‐dimensional projective implementation of this technique at 1.5 T illustrate excellent small vessel detail and background suppression.