Related Experiment Videos
Coronary MR angiography: respiratory motion correction with BACSPIN
Christopher J Hardy1, Lei Zhao, Xuli Zong
1GE Global Research Center, One Research Circle, Schenectady, NY 12309, USA. hardycj@crd.ge.com
Journal of Magnetic Resonance Imaging : JMRI
|January 24, 2003
Summary
The new BACSPIN technique enhances signal-to-noise ratio in coronary magnetic resonance angiography (CMRA) by intelligently combining breath-held and free-breathing data. This method improves image quality without extending breath-hold times.
Area of Science:
- Cardiovascular Imaging
- Magnetic Resonance Imaging
- Medical Technology
Background:
- Coronary magnetic resonance angiography (CMRA) traditionally requires breath-holding to minimize motion artifacts.
- Improving the signal-to-noise ratio (SNR) in CMRA is crucial for diagnostic accuracy.
- Extended breath-holds can be challenging for patients and may limit scan feasibility.
Purpose of the Study:
- To enhance the SNR of breath-held CMRA.
- To achieve improved image quality without increasing breath-hold duration or frequency.
- To develop a more patient-friendly CMRA acquisition technique.
Main Methods:
- The Breathing AutoCorrection with SPiral INterleaves (BACSPIN) technique was developed.
- It involves acquiring an initial breath-held, ECG-gated, interleaved-spiral dataset.
- Subsequent free-breathing acquisitions are compared to the breath-held data, with matched segments incorporated to build SNR and correct for motion.
Main Results:
- CMRA was successfully performed on six volunteers using the BACSPIN technique.
- Significant improvements in SNR and reduction in motional blurring were observed.
- In certain cases, complete elimination of breath-holding was possible, utilizing the average respiratory position.
Conclusions:
- BACSPIN offers a promising approach for CMRA.
- The technique effectively improves SNR while reducing the need for prolonged breath-holding.
- BACSPIN represents a valuable advancement in cardiovascular magnetic resonance imaging.