Resonant circuits for hyperthermia excited by RF magnetic field of MRI
Resonant circuits for hyperthermia excited by RF magnetic field of MRI
复制标题
MRI射频磁场激发热疗的谐振电路
DOI：
10.1109/intmag.2005.1463905
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发表时间：
2005
影响因子：
2.1
通讯作者：
T. Inoue
中科院分区：
文献类型：
--
作者：
M. Morita;T. Inoue;T. Yamada;Y. Takemura;T. Niwa;T. Inoue
提出了使用磁共振成像（MRI）的热疗。由线圈和电容器的闭合连接组成的谐振电路被用作由外部交流磁场加热的植入物。其谐振频率为63.9MHz。通过施加0.034 Oe的连续波场，从绝热谐振电路获得40/spl deg/C的最大温升。低占空因数MRI的射频磁场可将电路温度升高至13/spl deg/C。这种治疗方法通过确认手术效果，能够重复组合热疗治疗和MRI诊断。
The hyperthermia using a magnetic resonance imaging (MRI) is proposed. A resonant circuit consisting of a closed connection of coil and capacitor was used as an implant heated by an external ac magnetic field. Its resonant frequency was 63.9 MHz. The maximum temperature rise of 40/spl deg/C was obtained from the thermally insulated resonant circuit by applying the field of 0.034 Oe with continuous wave. The rf magnetic field of the MRI with a low duty factor could raise the circuit temperature up to 13/spl deg/C. This therapeutic method enables a repeated combination of the hyperthermia treatment and MRI diagnosis by confirming the operated effect.