Improved MR venography using quantitative susceptibility-weighted imaging
نویسندگان
چکیده
منابع مشابه
Improved susceptibility weighted imaging method using multi-echo acquisition.
PURPOSE To introduce novel acquisition and postprocessing approaches for susceptibility weighted imaging (SWI) to remove background field inhomogeneity artifacts in both magnitude and phase data. METHODS The proposed method acquires three echoes in a three-dimensional gradient echo (GRE) sequence, with a field compensation gradient (z-shim gradient) applied to the third echo. The artifacts in...
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Susceptibility-weighted imaging (SWI) is a magnetic resonance imaging (MRI) technique that enhances image contrast by using the susceptibility differences between tissues. It is created by combining both magnitude and phase in the gradient echo data. SWI is sensitive to both paramagnetic and diamagnetic substances which generate different phase shift in MRI data. SWI images can be displayed as ...
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BACKGROUND AND PURPOSE MR gradient echo imaging is sensitive to the magnetic susceptibility of different tissue types. The purpose of this study was to investigate the diagnostic potential of MR phase imaging of the human brain. METHODS High-spatial-resolution, T2*-weighted, single-echo images were acquired in five volunteers and one patient with a brain tumor on a 1.5T system by applying a 3...
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MR Sequence Cerebral malaria is a severe complication seen in approximately 2% of patients with acute Plasmodium falciparum infection. Characteristic diffuse petechial hemorrhages that were previously only seen by gross pathologic or microscopic examination, and virtually undetectable by conventional imaging modalities, were well demonstrated in a patient with cerebral malaria, with use of susc...
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ژورنال
عنوان ژورنال: Journal of Magnetic Resonance Imaging
سال: 2013
ISSN: 1053-1807
DOI: 10.1002/jmri.24413