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MR angiography using steady‐state free precession
Author(s) -
Foo Thomas K.F.,
Ho Vincent B.,
Marcos Hani B.,
Hood Maureen N.,
Choyke Peter L.
Publication year - 2002
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.10278
Subject(s) - steady state free precession imaging , precession , signal (programming language) , nuclear magnetic resonance , magnetic resonance angiography , contrast (vision) , physics , nuclear medicine , subtraction , angiography , steady state (chemistry) , pulse (music) , digital subtraction angiography , pulse sequence , magnetic resonance imaging , radiology , medicine , chemistry , optics , computer science , mathematics , arithmetic , astronomy , detector , programming language
Contrast‐enhanced MR angiography (CE‐MRA) using steady‐state free precession (SSFP) pulse sequences is described. Using SSFP, vascular structures can be visualized with high signal‐to‐noise ratio (SNR) at a substantial (delay) time after the initial arterial pass of contrast media. The peak blood SSFP signal was diminished by <20% 30 min after the initial administration of 0.2 mmol/kg of Gd‐chelate. The proposed method allows a second opportunity to study arterial or venous structures with high image SNR and high spatial resolution. A mask subtraction scheme using spin echo SSFP‐S(−) acquisition is also described to reduce stationary background signal from the delayed SSFP angiography images. Magn Reson Med 48:699–706, 2002. © 2002 Wiley‐Liss, Inc.
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