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Microwave Antennas for Medical Applications
IEEE MTT/AP Orlando Chapter Meeting
Dr. Koichi Ito
Monday, February 25, 2008
4:00PM ~ 5:30PM, Harris Center 101
Abstract
In recent years, various types of medical applications of antennas have widely been investigated and reported. Typical recent applications are:
- Information transmission:
- RFID (Radio Frequency Identification) / Wearable or Implantable monitor
- Wireless telemedicine / Mobile health system
- Diagnosis:
- MRI (Magnetic Resonance Imaging) / fMRI
- Microwave CT (Computed Tomography) / Radiometry
- Treatment:
- Thermal therapy (Hyperthermia, Coagulation, etc)
- Microwave knife
In this presentation, three different types of antennas which have been studied in our laboratory are introduced. Firstly, a pretty small antenna for an implantable monitoring system is presented. An H-shaped cavity slot antenna is a candidate for such a system. Some numerical and experimental characteristics of the antenna are demonstrated. Secondly, some different antennas or "RF coils" for MRI systems are introduced. In addition, SAR (specific absorption rate) distributions in the abdomen of a pregnant woman generated in a bird cage coil are illustrated. Finally, after a brief overview of thermal therapy and microwave heating, coaxial-slot antennas and array applicators composed of several coaxial-slot antennas for minimally invasive microwave thermal therapies are introduced. Then a few results of actual clinical trials by use of the coaxial-slot antennas are demonstrated from a technical point of view. Other therapeutic applications of the coaxial-slot antennas such as hyperthermic treatment for brain tumor and intracavitary hyperthermia for bile duct carcinoma are introduced.
Short Bio
KOICHI ITO received the B.S. and M.S. degrees from Chiba University, Chiba, Japan, in 1974 and 1976, respectively, and the D.E. degree from the Tokyo Institute of Technology, Tokyo, Japan, in 1985, all in electrical engineering.
From 1976 to 1979, he was a Research Associate at the Tokyo Institute of Technology. From 1979 to 1989, he was a Research Associate at Chiba University. From 1989 to 1997, he was an Associate Professor at the Department of Electrical and Electronics Engineering, Chiba University, and is currently a Professor at the Graduate School of Engineering, Chiba University. He has been appointed as one of the Deputy Vice-Presidents for Research, Chiba University, since April 2005. In 1989, 1994, and 1998, he visited the University of Rennes I, France, as an Invited Professor. Since 2004 he has been appointed as an Adjunct Professor to Institute of Technology Bandung (ITB), Indonesia. His main research interests include analysis and design of printed antennas and small antennas for mobile communications, research on evaluation of the interaction between electromagnetic fields and the human body by use of numerical and experimental phantoms, and microwave antennas for medical applications such as cancer treatment. He has co-authored over 100 journal papers with review and nine books including Handbook of Microstrip Antennas (IEE, 1989) and Antennas and Propagation for Body-Centric Wireless Communications (Artech House, 2006).
Dr. Ito is a Fellow of the IEEE, a Fellow of the IEICE (Institute of Electronics, Information and Communication Engineers, Japan), a member of the American Association for the Advancement of Science, the Institute of Image Information and Television Engineers of Japan (ITE) and the Japanese Society for Thermal Medicine (formerly, Japanese Society of Hyperthermic Oncology). He served as Chair of the Technical Group on Radio and Optical Transmissions, ITE from 1997 to 2001, Chair of the Technical Group on Human Phantoms for Electromagnetics, IEICE from 1998 to 2006, Chair of the IEEE AP-S Japan Chapter from 2001 to 2002, TPC Co-Chair of the 2006 IEEE International Workshop on Antenna Technology (iWAT2006) and Vice-Chair of the 2007 International Symposium on Antennas and Propagation (ISAP2007) in Japan. He currently serves as General Chair of iWAT2008 to be held in Chiba, Japan in March 2008, Vice-Chair of ISAP2008 to be held in Taiwan in 2008, and as an Associate Editor for the IEEE Transactions on Antennas and Propagation. He also serves as a Distinguished Lecturer and an AdCom member for the IEEE Antennas and Propagation Society since January 2007.
Organizer: Xun Gong, xungong@mail.ucf.edu, (407) 823-5762
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