A device capable of locating magnetic nanoparticles in lymph nodes to detect the spread of breast cancer has been developed by medical scientists in the UK and US. The device incorporates an ultra-sensitive magnetic probe to detect minuscule magnetic fields in the body.
For the first time, engineers have created surfaces for orthopaedic implants that reduce the presence of bacteria. The research, led by Brown University engineer Thomas Webster, may lead to a new class of artificial joints. That is a big market: More than 750,000 Americans undergo knee, hip or shoulder replacement surgery each year.