Pulse modulated microwave and infrared thermography for superficial hyperthermia  

作　　者：马国军 江国泰 陈志宏 

机构地区：[1]School of Life Science and Technology,Tongji University [2]School of Electronics and Information,Jiangsu University of Science and Technology

出　　处：《Journal of Central South University》2012年第7期1927-1931,共5页中南大学学报（英文版）

基　　金：Project(50977064) supported by the National Natural Science Foundation of China

摘　　要：A 3D temperature field distribution of biological tissue for superficial hyperthermia using a pulse modulated microwave （PMMW） was presented. A 3D sliced homogeneous phantom was radiated by the PMMW and an infrared thermal imager was applied to image temperature distribution throughout the phantom. The period of the PMMW is 3 s and the output power is 35 W. The temperature rises by at least 3 ℃ in the phantom when the duty cycle varies from 1/3, 1/2, 2/3 to 1 （denoted by scenarios 1-4）. Both the accumulative temperature-volume histogram and the relative depth-area ratio histogram show that the maximum temperature rise （MTR） is 6.6 and 8 ℃ in scenarios 2 and 3, and they are superior to scenarios 1 and 4. Furthermore, the PMMW can control temperature field distribution of biological tissue. It provides both preliminary basis for thermal volume control and new technology for temperature control and monitor in superficial hyperthermia.A 3D temperature field distribution of biological tissue for superficial hyperthermia using a pulse modulated microwave (PMMW) was presented.A 3D sliced homogeneous phantom was radiated by the PMMW and an infrared thermal imager was applied to image temperature distribution throughout the phantom.The period of the PMMW is 3 s and the output power is 35 W.The temperature rises by at least 3 °C in the phantom when the duty cycle varies from 1/3,1/2,2/3 to 1 (denoted by scenarios 1?4).Both the accumulative temperature?volume histogram and the relative depth?area ratio histogram show that the maximum temperature rise (MTR) is 6.6 and 8 °C in scenarios 2 and 3,and they are superior to scenarios 1 and 4.Furthermore,the PMMW can control temperature field distribution of biological tissue.It provides both preliminary basis for thermal volume control and new technology for temperature control and monitor in superficial hyperthermia.

关 键 词：3D temperature field distribution pulse modulated microwave （PMMW） infrared thermography superficialhyperthermia 

分 类 号：R318.0[医药卫生—生物医学工程] TN015[医药卫生—基础医学]