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High temporal and spatial resolution 3D time‐resolved contrast‐enhanced magnetic resonance angiography of the hands and feet
Author(s) -
Haider Clifton R.,
Riederer Stephen J.,
Borisch Eric A.,
Glockner James F.,
Grimm Roger C.,
Hulshizer Thomas C.,
Macedo Thanila A.,
Mostardi Petrice M.,
Rossman Phillip J.,
Vrtiska Terri J.,
Young Phillip M.
Publication year - 2011
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.22469
Subject(s) - contrast (vision) , image resolution , magnetic resonance angiography , magnetic resonance imaging , acceleration , temporal resolution , computer science , angiography , dynamic contrast , electromagnetic coil , sensitivity (control systems) , resolution (logic) , nuclear magnetic resonance , physics , optics , computer vision , radiology , artificial intelligence , medicine , classical mechanics , quantum mechanics , electronic engineering , engineering
Methods are described for generating 3D time‐resolved contrast‐enhanced magnetic resonance (MR) angiograms of the hands and feet. Given targeted spatial resolution and frame times, it is shown that acceleration of about one order of magnitude or more is necessary. This is obtained by a combination of 2D sensitivity encoding (SENSE) and homodyne (HD) acceleration methods. Image update times from 3.4–6.8 seconds are provided in conjunction with view sharing. Modular receiver coil arrays are described which can be designed to the targeted vascular region. Images representative of the technique are generated in the vasculature of the hands and feet in volunteers and in patient studies. J. Magn. Reson. Imaging 2011;. © 2011 Wiley‐Liss, Inc.