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Noise and filtration in magnetic resonance imaging
Open accessAbstract
Noise in two‐dimensional Fourier transform magnetic resonance images has been investigated using noise power spectra and measurements of standard deviation. The measured effects of averaging, spatial filtering, temporal filtering, and sampling have been compared with theoretical calculations. The noise of unfiltered images is found to be white, as expected, and the choice of the temporal filter and sampling interval affects the noise in a manner predicted by sampling theory. The shapes of the imager's spatial frequency filters are extracted using noise power spectra.
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Metadata
- Authors
- McVeigh, E. R., Henkelman, R. M., & Bronskill, M. J.
- Venue
- Medical Physics
- Publisher
- Wiley
- Published
- 1985-09
- Volume
- 12
- Issue
- 5
- Pages
- 586-591
- ISSN
- 0094-2405 (ISSN-L)
- 2473-4209
- OpenAlex
- W2105672072
- Cited by
- 222
- References
- 0
- FWCI
- 3.70
- Type
- journal article
- Language
- en
- Open access
- green
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- McVeigh, E. R., Henkelman, R. M., & Bronskill, M. J. (1985). Noise and filtration in magnetic resonance imaging. Medical Physics. https://doi.org/10.1118/1.595679
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