Title :
RF-induced thermoacoustic tomography
Author :
Xu, Minghua ; Wang, Lihong V.
Author_Institution :
Opt. Imaging Lab., Texas A&M Univ., College Station, TX, USA
Abstract :
We present our study of pulsed-microwave-induced thermoacoustic tomography under a circular measurement configuration in biological tissues. A wide beam of short-pulse microwave (radio-frequency, RF) energy is used to illuminate a sample from the bottom. An unfocused ultrasonic transducer with a small aperture is used to record the thermoacoustic signals from the side. A backprojection method based on a rigorous theory is used to reconstruct the cross-sectional image from the measured data. The reconstructed image agrees with the original sample very well.
Keywords :
acoustic tomography; biological effects of microwaves; biological tissues; biomedical transducers; biomedical ultrasonics; hyperthermia; image reconstruction; microwave heating; thermoacoustics; RF-induced thermoacoustic tomography; backprojection method; biological tissues; bottom; circular measurement configuration; cross-sectional image reconstruction; pulsed-microwave-induced thermoacoustic tomography; reconstructed image; short-pulse RF energy; short-pulse microwave energy; side; small aperture; small tumors; thermoacoustic signals; unfocused ultrasonic transducer; wide beam; Biological tissues; Electromagnetic heating; Electromagnetic wave absorption; Frequency; Microwave generation; Microwave theory and techniques; Pulse generation; Pulse measurements; Tomography; Transducers;
Conference_Titel :
Engineering in Medicine and Biology, 2002. 24th Annual Conference and the Annual Fall Meeting of the Biomedical Engineering Society EMBS/BMES Conference, 2002. Proceedings of the Second Joint
Print_ISBN :
0-7803-7612-9
DOI :
10.1109/IEMBS.2002.1106353
