Paper Info
Title
Contrast Enhancement And Artifact Reduction In Magnetization-Prepared Mr Angiography
Abstract
A method for the contrast enhancement and reduction of artifacts in three-dimensional (3D) magnetization-prepared (MP) magnetic resonance angiography (MRA) sequences is presented. A common artifact in these sequences is a periodical signal loss inside the vessels at the slab-slab junctions due to progressive saturation of the blood spins. This effect may be overcome by numerical optimization of the excitation pulses in dependence on sequence-related and physiological parameters. The feasibility of this method is shown in a phantom and an in vivo experiment by visualization of the carotid arteries and intracranial vessels. Furthermore, a method for contrast enhancement in MRA by data postprocessing is proposed, based on appropriate filtering of k-space data before Fourier transformation. This method is tested in two in vivo experiments by visualization of the arteries in the head and leg of healthy volunteers. (C) 1999 John Wiley & Sons, Inc.
Year
DOI
Venue
1999
10.1002/(SICI)1098-1098(1999)10:3<266::AID-IMA7>3.0.CO;2-9
INTERNATIONAL JOURNAL OF IMAGING SYSTEMS AND TECHNOLOGY
Field
DocType
Volume
Computer science,Magnetization,Imaging phantom,Carotid arteries,Filter (signal processing),Fourier transform,In vivo,Magnetic resonance angiography,Nuclear magnetic resonance,Angiography
Journal
10
Issue
ISSN
Citations 
3
0899-9457
0
PageRank 
References 
Authors
0.34
0
5
Name
Order
Citations
PageRank
Ralf Deichmann1470262.31
F. Wiesmann200.68
C. Hillenbrand300.34
D. Hahn400.68
A. Haase500.68