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Updated: Feb 6, 2026
11:44
Spin Saturation Transfer Difference NMR SSTD NMR: A New Tool to Obtain Kinetic Parameters of Chemical Exchange Processes
Published on: November 12, 2016
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Accelerating chemical exchange saturation transfer MRI with parallel blind compressed sensing.
Huajun She1,2, Joshua S Greer2,3, Shu Zhang2
1Institute for Medical Imaging Technology, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China.
Magnetic Resonance in Medicine
|August 28, 2018
Summary
Parallel blind compressed sensing (PBCS) accelerates Chemical Exchange Saturation Transfer (CEST) MRI scans in brain and breast imaging. This novel method enhances image quality compared to traditional techniques, offering a faster and more effective alternative.
Area of Science:
- Magnetic Resonance Imaging (MRI)
- Biomedical Engineering
- Medical Imaging Physics
Background:
- Chemical Exchange Saturation Transfer (CEST) is a promising MRI contrast technique.
- CEST imaging can be time-consuming, limiting its clinical application.
- Existing parallel imaging methods like SENSE may reduce CEST image quality.
Purpose of the Study:
- To evaluate Parallel Blind Compressed Sensing (PBCS) for accelerating CEST MRI.
- To assess the effectiveness of PBCS in brain and breast imaging.
- To compare PBCS with other reconstruction methods like BCS and SENSE.
Main Methods:
- CEST data acquired from phantoms, human brain (N=3), and breast (N=2) datasets.
- Retrospective Cartesian undersampling applied to acquired data.
- Reconstruction quality assessed using Normalized RMSE and high-frequency error norm, comparing PBCS-CEST with BCS-CEST and k-t sparse-SENSE CEST.
Main Results:
- Achieved acceleration factors of R=10 in brain and R=5 in breast without quality compromise.
- PBCS demonstrated superior reconstruction quality over BCS, k-t sparse-SENSE, and SENSE.
- Inclusion of coil sensitivity in PBCS improved CEST data reconstruction.
Conclusions:
- PBCS effectively accelerates CEST MRI acquisition without sacrificing image quality.
- Combining compressed sensing with parallel imaging offers a significant advancement over parallel imaging alone for accelerated CEST.
- PBCS presents a valuable alternative for faster and high-quality CEST experiments.
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