On the utility of spectroscopic imaging as a tool for generating geometrically accurate MR images and parameter maps in the presence of field inhomogeneities and chemical shift effects |
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| Authors: | Chris JG Bakker Hendrik de Leeuw Gerrit H van de Maat Jetse S van Gorp Job G Bouwman Peter R Seevinck |
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| Institution: | 1. Department of Radiology, University Medical Center Utrecht, Heidelberglaan 100, 3584CX Utrecht, the Netherlands;2. Image Sciences Institute, University Medical Center Utrecht, Heidelberglaan 100, 3584CX Utrecht, the Netherlands |
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| Abstract: | Lack of spatial accuracy is a recognized problem in magnetic resonance imaging (MRI) which severely detracts from its value as a stand-alone modality for applications that put high demands on geometric fidelity, such as radiotherapy treatment planning and stereotactic neurosurgery. In this paper, we illustrate the potential and discuss the limitations of spectroscopic imaging as a tool for generating purely phase-encoded MR images and parameter maps that preserve the geometry of an object and allow localization of object features in world coordinates. |
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| Keywords: | Spectroscopic imaging Field inhomogeneity Geometric distortion Magnetic susceptibility Chemical shift Interventional MRI Quality assurance |
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