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Improved cardiac gating and ventilation timing in animal experiments.
J C Pruski1, A Abduljalil, P M Robitaille
1Department of Radiology, Ohio State University, Columbus 43210.
Magnetic Resonance in Medicine
|October 1, 1992
Summary
We developed a new method for precise cardiac gating and ventilation timing in in vivo imaging. This technique uses feedback control to ensure accurate timing signals, preventing errors during data acquisition.
Area of Science:
- Biomedical Engineering
- Medical Imaging
- Spectroscopy
Background:
- Accurate timing is crucial for in vivo spectroscopic and imaging experiments.
- Noisy and fluctuating input signals can compromise experimental timing.
- Existing methods may struggle with signal variability, leading to timing errors.
Purpose of the Study:
- To present an improved solution for cardiac gating and ventilation timing.
- To enhance the reliability of timing signals in physiological experiments.
- To minimize timing errors during data acquisition in magnetic resonance imaging.
Main Methods:
- Utilizing a pulse conditioner to extract primary timing signals from noisy inputs.
- Implementing a timing controller for setting additional timing outputs.
- Employing full feedback control within the timing controller for optimization.
Main Results:
- Successfully extracted primary timing signals from fluctuating inputs.
- Optimized both magnetic resonance and respiratory timing using feedback control.
- Demonstrated the prevention of timing errors during data acquisition.
Conclusions:
- The presented approach offers a robust solution for cardiac and respiratory synchronization.
- Improved timing accuracy enhances the quality of in vivo spectroscopic and imaging data.
- Feedback control is effective in ensuring reliable and error-free experimental timing.