MR Spectroscopy I - Basic Concepts
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MRS I Basics Q&A's
- What's the difference between MRI and MRS?
- How do you obtain spectra instead of images on an MR scanner?
- What is meant by a chemical shift?
- How are proton chemical shifts measured on the δ scale?
- Why does the spectroscopy scale run backwards?
- How can you predict the chemical shift of hydrogen with a molecule?
- Why are some spectral peaks taller than others? Why are some wide while others are narrow?
- Why do some spectra split into smaller peaks while others do not?
- If frequency-encoding cannot be used to determine spatial position, how do you localize an MRS signal?
- How do you choose between a single and multi-voxel technique?
- Can you explain how PRESS works and why is it the most popular MRS method?
- How does the STEAM method for MR Spectroscopy work and when should it be used?
- How does the ISIS technique work and why is it preferred over PRESS for phosphorus spectroscopy?
- How is chemical shift imaging performed?
MRS I Basics Topics