Ultra-high resolution millimeter-wave imaging for biomedical applications: Feasibility study

This article numerically verifies ultra-high-resolution confocal millimeter-wave imaging for biomedical applications for the first time. A system with an ultra-wide bandwidth of more than 85 GHz is proposed to provide the ultra-high resolutions required for biomedical imaging applications. The feasibility of detecting early-stage tumors in three dimensions is shown using realistic numerical phantoms. A suitable image formation algorithm is developed and applied to the data. Successful resolution of spherical tumors is achieved in the obtained images both axially and laterally.