The high frequency k-space data in magnetic resonance imaging clinical field strengths of 1.5 T, 3D proton MRI of large is often poorly reproduced due to the finite dynamic range of an volumes can have k-space signal-to-noise ratios which exanalog-to-digital converter. The magnitude of this digitiza
Signal-to-noise ratio improvements in in vivo high resolution micro-volume selected spectroscopy
β Scribed by Stuart Crozier; James Field; David M. Doddrell
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 842 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0730-725X
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β¦ Synopsis
A system capable of in vivo volume selected 1H NMR spectroscopy of voxels as small as 0.2 cm3 is described. Signal-to-noise ratio improvements with probe design and a novel signal steering device are detailed. A high-resolution, image-directed proton spectrum from 0.2 cm3 of a rat's brain at 200 MHz obtained using the SUBMERGE/SPACE pulse sequence is presented. Single-scan voxel shimming was implemented to improve spectral resolution.
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