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Chemical shift imaging without water suppression at 3 T
Grzegorz L Chadzynski1, Uwe Klose
1Department of Neuroradiology, University Hospital Tuebingen, Tuebingen, Germany. g.chadzynski@gmail.com
Magnetic Resonance Imaging
|March 25, 2010
Summary
This study presents a new proton magnetic resonance spectroscopy method without water suppression, effectively reducing artifacts for clinical use. The technique simplifies spectral acquisition and processing, enhancing diagnostic capabilities.
Area of Science:
- Magnetic Resonance Imaging
- Spectroscopy
- Medical Physics
Background:
- Proton magnetic resonance spectroscopy (MRS) without water suppression is challenging due to water signal and sideband artifacts.
- Existing methods often require water suppression, complicating routine clinical application.
Purpose of the Study:
- To develop a chemical shift imaging (CSI) method for proton MRS without water suppression.
- To minimize sideband artifacts for improved clinical routine usability.
Main Methods:
- Acquired spectra from ten healthy volunteers using a 3T scanner and Point Resolved Spectroscopy (PRESS) sequence.
- Developed a three-step postprocessing technique: chemical shift correction, water signal reduction via Gaussian convolution, and sideband reduction using phantom FID subtraction.
- Utilized customized Matlab software for postprocessing.
Main Results:
- The developed method successfully reduced water signal and sideband artifacts in proton MRS spectra.
- Quantitative analysis demonstrated good agreement with water-suppressed spectra.
- Acquired spectra did not require additional phase correction.
Conclusions:
- The new CSI method effectively reduces water peak and sideband artifacts.
- Its simplicity and lack of phase correction requirement make it suitable for clinical applications.
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