Publication: Matched-filter acquisition for BOLD fMRI
Matched-filter acquisition for BOLD fMRI
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Kasper, L., Haeberlin, M., Dietrich, B. E., Gross, S., Barmet, C., Wilm, B. J., Vannesjo, S. J., Brunner, D. O., Ruff, C. C., Stephan, K. E., & Pruessmann, K. P. (2014). Matched-filter acquisition for BOLD fMRI. NeuroImage, 100, 145–160. https://doi.org/10.1016/j.neuroimage.2014.05.024
Abstract
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Abstract
We introduce matched-filter fMRI, which improves BOLD (blood oxygen level dependent) sensitivity by variable-density image acquisition tailored to subsequent image smoothing. Image smoothing is an established post-processing technique used in the vast majority of fMRI studies. Here we show that the signal-to-noise ratio of the resulting smoothed data can be substantially increased by acquisition weighting with a weighting function that matches the k-space filter imposed by the smoothing operation. We derive the theoretical SNR advanta
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- Kasper, Lars
- Haeberlin, Maximilian
- Dietrich, Benjamin E
- Gross, Simon
- Barmet, Christoph
- Wilm, Bertram J
- Vannesjo, S Johanna
- Brunner, David O
- Stephan, Klaas E
- Pruessmann, Klaas P
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Kasper, L., Haeberlin, M., Dietrich, B. E., Gross, S., Barmet, C., Wilm, B. J., Vannesjo, S. J., Brunner, D. O., Ruff, C. C., Stephan, K. E., & Pruessmann, K. P. (2014). Matched-filter acquisition for BOLD fMRI. NeuroImage, 100, 145–160. https://doi.org/10.1016/j.neuroimage.2014.05.024