Mimoto N, Kato K, Kanazawa Y, Shindo Y, Tsuchiya K, Kubo M, Uzuka T, Takahashi H, Fujii Y
Department of Mechanical Engineering Informatics, Meiji University, Kawasaki, Japan.
Annu Int Conf IEEE Eng Med Biol Soc. 2009;2009:3068-71. doi: 10.1109/IEMBS.2009.5332533.
Since the human brain is protected by the skull, it is not easy to non-invasively heat deep brain tumors with electromagnetic energy for hyperthermia treatments. Generally, needle type applicators were used in clinical practice to heat brain tumors. To expand the heating area of needle type applicators, we have developed a new type of needle made of a shape memory alloy (SMA). In this paper, heating properties of the proposed SMA needle type applicator were discussed. Here, in order to apply the SMA needle type applicator clinically. First, we constructed an anatomical 3-D FEM model from MRI and X-ray CT images using 3D-CAD software. Second, we estimated electric and temperature distributions to confirm the SMA needle type applicator using the FEM soft were JMAG-Studio. From these results, it was confirmed that the proposed method can expand the heating area and control the heating of various sizes of brain tumors.
由于人类大脑受到颅骨的保护，利用电磁能量对深部脑肿瘤进行无创热疗并不容易。一般来说，临床实践中使用针型施热器来加热脑肿瘤。为了扩大针型施热器的加热区域，我们开发了一种由形状记忆合金（SMA）制成的新型针。本文讨论了所提出的SMA针型施热器的加热特性。在此，为了将SMA针型施热器应用于临床。首先，我们使用3D-CAD软件从MRI和X射线CT图像构建了解剖学三维有限元模型。其次，我们使用有限元软件JMAG-Studio估计电分布和温度分布，以确认SMA针型施热器。从这些结果可以确认，所提出的方法可以扩大加热区域并控制各种大小脑肿瘤的加热。
