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 °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.
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.
基金
Project(50977064) supported by the National Natural Science Foundation of China
关键词
红外热成像仪
脉冲调制
高热
微波
温度场分布
生物组织
温度控制
分布图像
3D temperature field distribution
pulse modulated microwave (PMMW)
infrared thermography
superficialhyperthermia