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Contrast‐enhanced 3D MRA using SENSE
Author(s) -
Weiger Markus,
Pruessmann Klaas P.,
Kassner Andrea,
Roditi Giles,
Lawton Tristan,
Reid Allan,
Boesiger Peter
Publication year - 2000
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 - 10.1002/1522-2586(200011)12:5<671::aid-jmri3>3.0.co;2-f
Subject(s) - magnetic resonance angiography , encoding (memory) , image resolution , contrast (vision) , sensitivity (control systems) , sense (electronics) , magnetic resonance imaging , resolution (logic) , image quality , temporal resolution , gradient echo , computer science , nuclear medicine , radiology , nuclear magnetic resonance , medicine , biomedical engineering , computer vision , artificial intelligence , physics , optics , chemistry , image (mathematics) , electronic engineering , engineering
Sensitivity encoding (SENSE) was used to improve the performance of three‐dimensional contrast‐enhanced magnetic resonance angiography (3D CE‐MRA). Utilizing an array of receiver coils for sensitivity encoding, the encoding efficiency of gradient‐echo imaging was increased by factors of up to three. The feasibility of the approach was demonstrated for imaging of the abdominal vasculature. On the one hand, using a SENSE reduction factor of two, the spatial resolution of a breath‐hold scan of 17 seconds was improved to 1.0 × 2.0 × 2.0 mm 3 . On the other hand, using threefold reduction, time‐resolved 3D CE‐MRA was performed with a true temporal resolution of 4 seconds, at a spatial resolution of 1.6 × 2.1 × 4.0 mm 3 . CE‐MRA with SENSE was performed in healthy volunteers and patients and compared with a standard protocol. Throughout, diagnostic quality images were obtained, showing the ability of sensitivity encoding to enhance spatial and/or temporal resolution considerably in clinical angiographic examinations. J. Magn. Reson. Imaging 2000;12:671–677. © 2000 Wiley‐Liss, Inc.