The Use of Terahertz Radiation in Medical Imaging

Abstract

Terahertz (THz) radiation, occupying the electromagnetic spectrum between microwave and infrared, has recently garnered attention for its potential in non-invasive medical imaging. This radiation, with frequencies ranging from 0.1 to 10 THz, exhibits unique interactions with biological tissues, making it suitable for early detection of cancer, dental analysis, and skin disease diagnostics. Unlike ionizing radiation, THz waves are safe for biological samples, offering label-free, real-time imaging capabilities. However, limitations including water absorption, cost, and technological complexity persist. This paper reviews the principles, advancements, clinical applications, and future directions of THz medical imaging.