Cardiac computer tomography (CT) imaging is a promising technology for the non-invasive diagnosis of coronary artery disease. In order for this technique to reach adoption in clinical settings, high-resolution CT coronary angiograms of a beating heart are required. Gating methods such as electrocardiogram (ECG) gating have been proposed to attain higher resolution, but have been unsuccessful to date.
Researchers at the University of Michigan have developed a method and system for gating the image data acquisition acquried from a moving object. This is achieved by acquiring images from the subject by relying on a cross-correlation between sent and received signals. Unlike ECG gating that is based on changes in electrical potential, this new gating method is based on the heart’s physical motion.
Applications and Advantages
- High resolution CT imaging of moving objects-nl-such as a beating heart.
- Minimal time delays in image acquisition.
- Gating at different parts of the-nl-heart can be achieved in one single-nl-acquisition cycle.