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Susceptibility insensitive single shot MRI combining BURST and multiple spin echoes
P van Gelderen1, C T Moonen, J H Duyn
1NIH in Vivo NMR Research Center, BEIP, NCRR, Bethesda, MD 20892, USA.
Magnetic Resonance in Medicine
|March 1, 1995
Summary
A novel single-shot magnetic resonance imaging (MRI) technique overcomes magnetic susceptibility issues. This method enables fast, multislice imaging even in non-uniform magnetic fields, suitable for clinical scanners.
Area of Science:
- Medical Imaging
- Magnetic Resonance Imaging Physics
Background:
- Magnetic susceptibility effects in Magnetic Resonance Imaging (MRI) pose challenges for image quality, particularly in regions with poor magnetic field homogeneity.
- Existing techniques may struggle to provide efficient multislice imaging in such challenging environments.
Purpose of the Study:
- To introduce a novel single-shot MRI technique that is insensitive to magnetic susceptibility artifacts.
- To demonstrate the feasibility of this technique for rapid multislice imaging in non-ideal magnetic field conditions.
Main Methods:
- The technique combines a BURST excitation sequence with multiple radiofrequency (RF) refocusing pulses.
- This approach was implemented on a standard 1.5 T clinical MRI scanner.
Main Results:
- The method successfully acquired images with a matrix size of 64 x 54 and 4 x 4 mm resolution.
- Imaging was achieved in a rapid acquisition time of 230 ms.
- Images were validated on both phantoms and human brain samples.
Conclusions:
- The developed single-shot MRI technique offers robustness against magnetic susceptibility effects.
- It enables fast and efficient multislice imaging in challenging magnetic field environments.
- The technique is compatible with standard clinical MRI scanners, suggesting potential for widespread adoption.