Figure 7

THz mapping of bio-samples through the SBE. (a) Mice tail-transverse sections with a thickness of 1 mm. (Scale bar = 25 mm) (b) X-ray picture of the mouse tail, with yellow lines indicating the cut point. (c) THz mapping of the mouse-tail transverse sections with a diameter of 2.5 mm using a conventional mirror-based focusing setup (upper image) and the SBE (lower image). In the SBE-coupled scanning result, hair (yellow and red), skin (light blue), and bone (dark blue) were clearly visualized. In the measured result without using the SBE, the image cannot be used to distinguish between different tissues and exhibits a much lower resolution. (d) Right middle lobe for THz bio-mapping. (Scale bar = 25 mm) (e) SBE-based THz imaging for the right middle lobe of (d). Three-dimensional biological tissue microstructures were visualized in it.