Continuously moving table data acquisition method for long FOV contrast-enhanced MRA and whole-body MRI

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 ser...

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Bibliographic Details
Published in:Magnetic resonance in medicine 2002-02, Vol.47 (2), p.224-231
Main Authors: Kruger, David G., Riederer, Stephen J., Grimm, Roger C., Rossman, Phillip J.
Format: Article
Language:English
Subjects:
Animals
Biological and medical sciences
Blood Flow Velocity - physiology
Contrast Media
extended FOV
Fourier Analysis
Gadolinium DTPA
Humans
Image Enhancement - instrumentation
Image Processing, Computer-Assisted - instrumentation
Imaging, Three-Dimensional - instrumentation
Investigative techniques, diagnostic techniques (general aspects)
Magnetic Resonance Angiography - instrumentation
Magnetic Resonance Imaging - instrumentation
Medical sciences
Miscellaneous. Technology
moving table MRI
peripheral MR angiography
Phantoms, Imaging
Radiodiagnosis. Nmr imagery. Nmr spectrometry
Swine
whole body MRI
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Summary: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.
ISSN:0740-3194
1522-2594
DOI:10.1002/mrm.10061