Susceptibility Artifact Reduction in Fat Suppression
| Autor: | J R Ballinger, Jia-Hong Gao, Jintong Mao, Hong Yan |
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| Rok vydání: | 1995 |
| Předmět: |
Artifact (error)
Signal processing Materials science Fourier Analysis Image quality Pulse (signal processing) Broad bandwidth Fat suppression Signal Processing Computer-Assisted Maxillary Sinus Image Enhancement Magnetic Resonance Imaging Signal Artifact reduction Nuclear magnetic resonance Adipose Tissue Humans Radiology Nuclear Medicine and imaging Artifacts |
| Zdroj: | Magnetic Resonance in Medicine. 33:582-587 |
| ISSN: | 1522-2594 0740-3194 |
| DOI: | 10.1002/mrm.1910330420 |
| Popis: | Strong fat signal in regions where a large susceptibility difference exists, for instance at the interface between air and tissue near the maxillary sinus, may not be eliminated by currently available fat suppression techniques without sacrificing the overall quality of the images. In this article, we show that this fat signal, which appears as a susceptibility artifact, can be significantly reduced by using an optimized presaturation pulse with sharp edges and a broad bandwidth, while causing minimal disturbance of the water signal. Several optimized presaturation pulses can be reproduced by the Fourier coefficients provided in the Appendix. |
| Databáze: | OpenAIRE |
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