The latest MRI technology can determine the probability of stroke by imaging blood flow velocity
Atrial fibrillation is the direct cause of stroke
There are approximately 3.35 million atrial fibrillation patients worldwide, which is also the most common form of arrhythmia. The presence of an irregular heart does not seem to pose much of a problem, but patients with atrial fibrillation are more likely to have a stroke.
Michael Markl, Lester B. and Frances T. Knight, professors of cardiac imaging at Northwestern University, said: "Atrial fibrillation is thought to be the direct cause of stroke in 20% to 30% of Americans. Although atrial fibrillation is easy to detect and diagnose, The resulting stroke cannot be easily predicted."
Atrial four-dimensional CMR technique for detecting blood flow
Markl is a biomedical engineer at McCormick School of Northwestern University and a professor of radiology at Feinberg School of Medicine. He developed a new imaging technology that can help predict the population at greatest risk of stroke. This breakthrough technology may lead to better treatment and prognosis for patients with atrial fibrillation. The study was supported and sponsored by the American Heart Association and the National Institutes of Health, and the results were published this month in the journal Circulation: Cardiovascular Imaging.
Atrial fibrillation causes a stroke because it reduces blood flow to the patient. Slow, stagnant blood flow will produce blood clots, which will follow the blood circulation into the brain and cause strokes in the patient. Markl's Cardiac Magnetic Resonance (CMR) imaging test measures the flow of blood in the heart and body. The so-called "atrial four-dimensional CMR" technology is a non-invasive technique that does not require contrast agents. The visualization process will display dynamic images of blood flow in three spatial dimensions in the form of software, which can also be integrated into current MRI equipment without the need to purchase special hardware, scanners, or existing The device is upgraded. Markl said, "We only program the scanner to get different information than what other devices can't currently produce." The device will allow you to measure blood flow, molecular diffusion, and tissue elasticity. With it, you can perform a more detailed inspection of the human body.
Four-dimensional flow CMR can perform three-dimensional dynamic measurement of heart and atrial blood flow.
The image of stagnant blood flow derived from the left atrium and left atrial appendage is a new concept of visualization and low-flow quantification.
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