Magnetic particle imaging is a new, up-and-coming, safe and highly sensitive tracer imaging technique that works by detecting superparamagnetic iron oxide nanoparticles with high image contrast (that is, no background tissue signal). The technique, which does not use any ionizing radiation, can be used to image anywhere inside the body, which means that it could be promising for detecting and monitoring tumours. Researchers in the US are now the first to have used MPI to passively detect cancer by basically exploiting the abnormal leakiness of tumour blood vessels – a finding that bodes well for the early detection of cancers like breast cancer in patients at risk for the disease……..
http://nanotechweb.org/cws/article/tech/67914
