Title :
Terahertz imaging of biological samples
Author :
Hailu, Daniel M. ; Ehtezazi, Iraj A. ; Safavi-Naeini, Safieddin
Author_Institution :
Dept. of ECE, Univ. of Waterloo, Waterloo, ON, Canada
Abstract :
A transmission-mode measurement for CW THz imaging of polyethylene cylinder and cross-seciton of tooth is conducted using BWO. The beam profile of THz beam generated by a BWO was measured at the focal plane of a CW imaging system and the effect of electrically-large polyethylene cylinder on the beam profile examined. It was found that the focused beam becomes astigmatic and has more of an elliptical beam profile. THz transmission-mode CW imaging of a cross-section of premolar tooth sample with dentine and enamel was conducted at 840 GHz.
Keywords :
backward wave oscillators; focal planes; medical image processing; polymers; submillimetre wave imaging; terahertz wave imaging; BWO; backward-wave oscillator; biological samples; dentine; elliptical beam profile; enamel; focal plane; focused beam; frequency 840 GHz; polyethylene cylinder; premolar tooth sample; terahertz imaging; transmission-mode measurement; Apertures; Deconvolution; Imaging; Lenses; Optical variables measurement; Polyethylene; Teeth;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2010 IEEE
Conference_Location :
Toronto, ON
Print_ISBN :
978-1-4244-4967-5
DOI :
10.1109/APS.2010.5561667
