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Applications of high-resolution echoplanar spectroscopic imaging for structural imaging
S Sarkar1, K Heberlein, G J Metzger
1Department of Radiology and Center for Magnetic Resonance Research, University of Minnesota Medical School, Minneapolis 55455, USA.
Journal of Magnetic Resonance Imaging : JMRI
|July 10, 1999
Summary
High-resolution echoplanar spectroscopic imaging (EPSI) now offers fast, detailed anatomic imaging comparable to conventional methods. This technique enables advanced applications like fat-water imaging and T2* mapping, expanding its clinical utility.
Area of Science:
- Magnetic Resonance Imaging
- Spectroscopic Imaging
- Medical Physics
Background:
- Echoplanar spectroscopic imaging (EPSI) emerged as a rapid spectroscopic imaging technique.
- Recent advancements have enabled its implementation on clinical scanners.
- Further improvements in hardware and processing enhance EPSI's capabilities.
Purpose of the Study:
- To demonstrate the potential of high-resolution EPSI for deriving structural images.
- To explore applications where spectroscopic information is advantageous.
- To detail EPSI sequence design and processing strategies.
Main Methods:
- Utilized advanced gradient hardware and processing strategies for EPSI.
- Achieved spatial resolution comparable to conventional anatomic imaging.
- Conducted experimental studies in normal volunteers.
Main Results:
- High-resolution EPSI successfully generated structural images.
- Demonstrated feasibility for chemical shift (fat-water) imaging.
- Showcased potential for narrow bandwidth imaging and T2* mapping.
Conclusions:
- High-resolution EPSI is a viable technique for imaging anatomic structures.
- EPSI offers a fast alternative with resolution matching conventional MRI.
- The presented methods and results highlight EPSI's expanding clinical applications.