A hand held device called the ‘infrascanner’ is hot off the press; it can detect blood clots using ‘near infra-red’ light with a beam that can penetrate the skull up to three centimetres. As blood clots absorb near infra-red light differently to normal brain tissue this change in the signal can be picked up and bounced back to the scanner.
I’m looking forward to more results about this technology as rapid detection is paramount with head injury patients. It’s currently being trailed in India. For more information about this great piece of technology see the BBC report.