Related Experiment Videos
A DANTE tagging sequence for the evaluation of translational sample motion
1Department of Radiology, Pennsylvania State University College of Medicine, Milton S. Hershey Medical Center, Hershey 17033.
Magnetic Resonance in Medicine
|August 1, 1990
Summary
A new magnetic resonance imaging (MRI) sequence uses DANTE excitation and a magnetic field gradient to visualize translational motion, like cardiac contraction, with enhanced resolution and reduced eddy currents.
Area of Science:
- Medical Imaging
- Biophysics
- Cardiovascular Imaging
Background:
- Cardiac motion presents challenges for magnetic resonance imaging (MRI) acquisition.
- Existing MRI techniques struggle with motion artifacts, impacting diagnostic accuracy.
- Translational motion, particularly from cardiac contraction, requires specialized imaging approaches.
Purpose of the Study:
- To present a novel magnetic resonance imaging (MRI) sequence.
- To develop an MRI technique sensitive to translational motion, specifically cardiac contraction.
- To improve image quality and reduce artifacts in cardiac MRI.
Main Methods:
- The sequence utilizes DANTE (Delayed Aftertriggering Nuclear spin Tagging Experiment) radio-frequency excitation.
- A continuous magnetic field gradient is applied during the sequence.
- This combination generates a grid pattern of lines for motion detection.
Main Results:
- The developed MRI sequence demonstrates enhanced line resolution compared to current methods.
- Reduced eddy-current formation was observed, leading to cleaner signal acquisition.
- The sequence is sensitive to translational motion, effectively capturing cardiac contraction dynamics.
Conclusions:
- The novel DANTE-based MRI sequence offers improved performance for imaging translational motion.
- This technique holds potential for more accurate and detailed cardiovascular imaging.
- Reduced artifacts and enhanced resolution represent significant advancements in cardiac MRI technology.