Nature: The world's strongest MRI machines are pushing human imaging to new limits Researchers look to scanners with 10.5-tesla magnets and beyond for unprecedented detail about the brain. ... Scans done with 7-T machines have also revealed more about the symptoms and progression of multiple sclerosis. New medications for the disease have helped to slow the advance of motor deficits, and the ensuing gain in patients’ life expectancy and quality of life has meant that cognitive problems have been noticed for the first time. “A lot of these people have what they might describe as [attention deficit hyperactivity disorder]-like symptoms,” says Menon. “We’ve never understood how that could be until now.” Using a 7-T scanner, Menon’s group has been able to spot lesions in areas where they previously had not been observed, including the dorsolateral prefrontal cortex, an area responsible for executive function and attention. “Historically, those were quite hard to see,” he says. These lesions might explain why the patients develop cognitive symptoms.