Technology : How to spot the foreign body lurking deep within

时间:2019-02-27 01:12:04166网络整理admin

By Jonathan Beard FOREIGN objects in the body can be hard to find if they are made of materials that do not show up on X-rays. These include medical implants such as artificial joints and stents. But a polymer invented by Marc-Anton Kruft, of the Eindhoven University of Technology, could make them far easier to find. Kruft has created polymers containing iodine which show up far better on X-rays than existing medical materials. Doctors need to locate medical implants to ensure they are in the right place or are working properly. Currently, barium sulphate or zirconium dioxide are added to implants to make them stand out. Kruft says neither metal is completely incorporated into the polymer and each is toxic so any leaching can be hazardous. Both compounds also weaken the polymers,