Reducing contrast contamination in radial turbo-spin-echo acquisitions by combining a narrow-band KWIC filter with parallel imaging
Neumann D, Breuer FA, Voelker M, Brandt T, Griswold MA, Jakob PM, Blaimer M (2014)
Publication Type: Journal article
Publication year: 2014
Journal
Publisher: Wiley-Blackwell
Book Volume: 72
Pages Range: 1680-6
Journal Issue: 6
DOI: 10.1002/mrm.25081
Abstract
Cartesian turbo spin-echo (TSE) and radial TSE images are usually reconstructed by assembling data containing different contrast information into a single k-space. This approach results in mixed contrast contributions in the images, which may reduce their diagnostic value. The goal of this work is to improve the image contrast from radial TSE acquisitions by reducing the contribution of signals with undesired contrast information.Radial TSE acquisitions allow the reconstruction of multiple images with different T2 contrasts using the k-space weighted image contrast (KWIC) filter. In this work, the image contrast is improved by reducing the band-width of the KWIC filter. Data for the reconstruction of a single image are selected from within a small temporal range around the desired echo time. The resulting dataset is undersampled and, therefore, an iterative parallel imaging algorithm is applied to remove aliasing artifacts.Radial TSE images of the human brain reconstructed with the proposed method show an improved contrast when compared with Cartesian TSE images or radial TSE images with conventional KWIC reconstructions.The proposed method provides multi-contrast images from radial TSE data with contrasts similar to multi spin-echo images. Contaminations from unwanted contrast weightings are strongly reduced.
Authors with CRIS profile
Involved external institutions
MRB Forschungszentrum für Magnet-Resonanz-Bayern e.V / MRB Research Center for Magnetic-Resonance-Bavaria
Germany (DE)
University Hospitals of Cleveland / Case Western Reserve University Hospital
United States (USA) (US)
Germany (DE)
University Hospitals of Cleveland / Case Western Reserve University Hospital
United States (USA) (US)
How to cite
APA:
Neumann, D., Breuer, F.A., Voelker, M., Brandt, T., Griswold, M.A., Jakob, P.M., & Blaimer, M. (2014). Reducing contrast contamination in radial turbo-spin-echo acquisitions by combining a narrow-band KWIC filter with parallel imaging. Magnetic Resonance in Medicine, 72(6), 1680-6. https://dx.doi.org/10.1002/mrm.25081
MLA:
Neumann, Daniel, et al. "Reducing contrast contamination in radial turbo-spin-echo acquisitions by combining a narrow-band KWIC filter with parallel imaging." Magnetic Resonance in Medicine 72.6 (2014): 1680-6.
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