Sky News has spoken to patients who believe gadolinium, injected in a compound, has had devastating consequences on their health. Gadolinium is a metal used in around a third of MRI scans and patients have called on the NHS to change its safety advice. Our health correspondent, Paul Kelso, has this exclusive report. SUBSCRIBE to our YouTube channel for more videos: / skynews Follow us on Twitter: / skynews and / skynewsbreak Like us on Facebook: / skynews Follow us on Instagram: / skynews For more content go to http://news.sky.com and download our apps: Apple https://itunes.apple.com/gb/app/sky-n... Android https://play.google.com/store/apps/de...