Journal of medical imaging
Silicon-based nanoparticles are ideally suited for use as biomedical imaging agents due to their biocompatibility, biodegradability, and simple surface chemistry that facilitates drug loading and targeting. A method of hyperpolarizing silicon particles using dynamic nuclear polarization, which increases magnetic resonance imaging signals by several orders-of-magnitude through enhanced nuclear spin alignment, has recently been developed to allow silicon particles to function as contrast agents for in vivo magnetic resonance imaging. The enhanced spin polarization of silicon lasts significantly longer than other hyperpolarized agents (tens of minutes, whereas
Whiting, N., Hu, J., Zacharias, N. M., Ganesh, L. R., Lokesh, D. E., Volk, D. G., ... & Bhattacharya, P. (2016). Developing hyperpolarized silicon particles for in vivo MRI targeting of ovarian cancer. Journal of Medical Imaging 3(3), 036001.