Advanced respiratory motion compensation for coronary MR angiography
Markus Henningsson1, Rene M Botnar
1Division of Imaging Sciences & Biomedical Engineering, the Rayne Institute, King's College London, St Thomas' Hospital, London, UK. markus.o.henningsson@kcl.ac.uk
Sensors (Basel, Switzerland)
|May 28, 2013
Summary
Advanced respiratory motion compensation techniques improve coronary magnetic resonance angiography (CMRA) image quality and reduce scan times. New methods offer enhanced motion correction for clearer cardiac imaging.
Area of Science:
- Cardiovascular Imaging
- Medical Physics
- Radiology
Background:
- Respiratory motion significantly degrades coronary magnetic resonance angiography (CMRA) image quality.
- Traditional motion compensation uses a single navigator on the diaphragm, limiting accuracy.
- Recent advancements enable direct, more precise respiratory motion estimation of the heart.
Purpose of the Study:
- To review current and advanced respiratory motion compensation strategies for CMRA.
- To describe the components of motion compensation: estimation, gating, and correction.
- To highlight methods improving CMRA scan efficiency and diagnostic accuracy.
Main Methods:
- Review of established and novel respiratory motion compensation techniques in CMRA.
- Discussion of one-dimensional respiratory navigators and their limitations.
- Explanation of advanced methods like image-based navigators and respiratory binning.
Main Results:
- New methods allow CMRA data acquisition throughout the respiratory cycle.
- Improved motion compensation leads to better image quality and reduced artifacts.
- Advanced techniques significantly decrease overall CMRA scan time.
Conclusions:
- Direct respiratory motion estimation enhances CMRA performance.
- Image-based navigators and respiratory binning offer superior motion correction.
- Advanced compensation strategies are crucial for efficient and accurate CMRA.
Related Concept Videos
01:21Imaging Studies for Cardiovascular System IV: CMRI
Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
01:28Imaging Studies for Cardiovascular System V: CT
Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...