OxyChip

**Semantic type:** Medical Device

**Definition:** A proprietary implantable oxygen sensor designed to make oxygen measurements in tumors using EPR oximetry. The chip is encapsulated in a biocompatible polymer matrix and can be implanted using an 18-G brachytherapy needle. Following implantation into tumor tissue within 20 mm from skin surface, O2 measurements are performed noninvasively using an external RF coil.