Scientists have developed a new MRI scanning technique that can devise how much of a carotid plaque’s composition is fatty. This technique provides a more accurate stroke risk assessment for patients, and “has the promise to save lives.”
A New Technique
Researchers have developed a new kind of MRI scan can non-invasively predict stroke risk. The technique analyzes the makeup of plaques inside the carotid arteries, which can be used to predict how likely they are to cause a stroke. The analysis focuses on their composition, as plaques that are composed principally of cholesterol are more likely to trigger strokes.
The brain relies on the carotid arteries for its supply of blood and the oxygen it carries. Fatty plaques that rupture inside the arteries can block them, cutting off the brain’s blood supply and, therefore, starving it of oxygen. This circumstance is often at the root of strokes, which can be debilitating and even life-threatening.
Carotid atherosclerotic disease is believed to cause 10 to 20 percent of strokes. Stroke is the second most frequent cause of death in developed nations. In the United States, it’s responsible for about one in every 16 deaths. Strokes put people at risk for more than death: they’re also the main cause of acquired longterm disability in adults. More than half of all people who suffer a stroke become partially dependent on others. 40 percent of stroke victims need special care and 9 percent require total care.
Study co-author Dr. Luca Biasiolli told The Guardian: “When someone goes to hospital having suffered a minor stroke, it’s vital that doctors know whether the patient might be at risk of a further stroke, which could be fatal. Being able to quantify cholesterol in carotid plaques is a really exciting prospect, as this new MRI technique could help doctors to identify patients at higher risk of stroke…