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  • Ragnehed, Mattias, 1976-, et al. (author)
  • Visual Grading of 2D and 3D fMRI compared to image based descriptive measures
  • 2010
  • In: European Radiology. - Berlin / Heidelberg : Springer. - 0938-7994 .- 1432-1084. ; 20:3, s. 714-724
  • Journal article (peer-reviewed)abstract
    • A prerequisite for successful clinical use of functional Magnetic Resonance Imaging (fMRI) is the selection of an appropriate imaging sequence. In this paper, 2D and 3D fMRI sequences were compared using different image quality assessment methods. Descriptive image measures, such as activation volume and temporal signal-to-noise ratio (TSNR), were compared with results from Visual Grading Characteristics (VGC) analysis of the fMRI results. It was found that significant differences in activation volume and TSNR were not directly reflected by differences in VGC scores. The results suggest that better performance on descriptive image measures is not always an indicator of improved diagnostic quality of the fMRI results. In conclusion, in addition to descriptive image measures, it is important to include measures of diagnostic quality when comparing different fMRI data acquisition methods.
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