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Centrally fat‐saturated three‐dimensional magnetic resonance angiography of the abdomen using selective central fat‐saturation of k‐space
Author(s) -
Amano Yasuo,
Takahama Katsuya,
Matsuda Tsuyoshi,
Amano Maki,
Kumazaki Tatsuo
Publication year - 2003
Publication title -
journal of magnetic resonance imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.563
H-Index - 160
eISSN - 1522-2586
pISSN - 1053-1807
DOI - 10.1002/jmri.10385
Subject(s) - magnetic resonance imaging , saturation (graph theory) , abdomen , medicine , nuclear magnetic resonance , magnetic resonance angiography , radiology , materials science , physics , mathematics , combinatorics
Purpose To assess the usefulness of centrally fat‐saturated three‐dimensional magnetic resonance (MR) angiography of the abdomen using an elliptical centric view order and selective placement of fat‐saturation pulses in the central 30% portion of the k‐space in terms of fat signal reduction, image contrast of post‐contrast images, and breath‐holding time. Methods Fat signal in abdomen and breath‐holding time were compared between centrally fat‐saturated three‐dimensional sequence and partially fat‐saturated three‐dimensional sequence or conventional fat‐saturated three‐dimensional sequence. Abdominal contrast‐enhanced centrally fat‐saturated three‐dimensional MR angiography was obtained at arterial and equilibrium phases, and image quality was quantitatively and visually evaluated. Results Centrally fat‐saturated three‐dimensional sequence suppressed fat signal, as did the conventional fat‐saturated three‐dimensional sequence, and the breath‐hold was prolonged only by 1.5 seconds compared to the partially fat‐saturated three‐dimensional sequence. Contrast‐enhanced centrally fat‐saturated three‐dimensional MR angiography provided abdominal MR arteriography with large signal difference between vessels and fat, while venous signal was insufficient at equilibrium phase. Conclusion Abdominal contrast‐enhanced centrally fat‐saturated three‐dimensional MR angiography using an elliptical centric view order and selective central fat‐saturation of k‐space reduced fat signal comparable to conventional fat‐saturated three‐dimensional sequence, and provided contrast‐enhanced MR arteriography with high vascular contrast and minimum prolongation of breath‐hold. J. Magn. Reson. Imaging 2003;18:567–574. © 2003 Wiley‐Liss, Inc.