LAUSR

In their article “The ELAPSS score for prediction of risk of growth of unruptured intracranial aneurysms,” Backes et al.1 developed a risk score for aneurysm growth. They followed 1,507 people who had 1,909 unruptured intracranial aneurysms (some people had more than 1 aneurysm). The patients were from several medical centers around the world: Canada, the Netherlands, Finland, China, and Japan. They were all over 18 years old. Their aneurysms were followed by several types of imaging: some centers used MRI, while others used CT angiography, or calibrated digital subtraction angiography. The local doctor decided how often to perform the studies.