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Continuously moving table data acquisition method for long FOV contrast‐enhanced MRA and whole‐body MRI
Author(s) -
Kruger David G.,
Riederer Stephen J.,
Grimm Roger C.,
Rossman Phillip J.
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.10061
Subject(s) - data acquisition , computer science , volume (thermodynamics) , field of view , table (database) , computer vision , contrast (vision) , point (geometry) , artificial intelligence , physics , mathematics , geometry , quantum mechanics , data mining , operating system
A method is presented in which an extended longitudinal field of view (FOV), as required for whole‐body MRI or MRA peripheral runoff studies, is acquired in one seamless image. Previous methods typically either acquired 3D data at multiple static “stations” which covered the extended FOV or as a series of 2D axial sections. The method presented here maintains the benefits of 3D acquisition while removing the discrete nature of the multistation method by continuous acquisition of MR data as the patient table moves through the desired FOV. Although the technique acquires data only from a homogeneous central volume of the magnet at any point in time, by spatially registering all data it is possible to extend the FOV well beyond this volume. The method is demonstrated experimentally with phantoms, in vivo angiographic animal studies, and in vivo human studies. Magn Reson Med 47:224–231, 2002. © 2002 Wiley‐Liss, Inc.