具有嵌入式PI控制功能的磁性超热仪器的设计和性能评估
Mou Chatterjee1, Sandip Pal1,2
1Department of Atomic Energy, Variable Energy Cyclotron Centre, Kolkata, India.
Electromagnetic biology and medicine
|June 29, 2025
概括
这项研究开发了一种负担得起的本土高温仪器,用于精确的癌症治疗. 该系统使用先进的控制器在治疗期间准确调节磁纳米粒子的温度.
科学领域:
- 生物医学工程 生物医学工程
- 在瘤学瘤学.
- 材料科学 材料科学 材料科学
背景情况:
- 热量过高是一种有效的非侵入性癌症治疗方法,需要精确的温度控制.
- 精确的热剂量传递将健康周围组织的损伤降至最低.
- 现有的超热仪器可能缺乏负担能力或本土设计.
研究的目的:
- 报告一个定制设计的高温仪器的本土开发情况.
- 实现基于ARM的先进RISC机器嵌入式闭环比例整合 (PI) 控制器,用于精确的温度管理.
- 探索该系统在体外高温症研究中的潜力.
主要方法:
- 开发了一种定制的高温仪器,配备基于ARM的PI控制器.
- 通过PI控制器控制基于马齐利振荡器的半桥逆变器的直流偏差.
- 使用红外 (IR) 辐射温度计实时监测温度和反控制交替磁场 (AMF) 幅度,以调节磁纳米粒子 (MNP) 温度.
主要成果:
- 通过定制设计的加热器和控制器成功进行了体外实验.
- 实现了精确的温度控制,标准偏差约为0.3°C,超标在3°C内.
- 获得了令人满意的特定吸收率 (SAR) 值,证明了高效的能量沉积.
结论:
- 国内开发的高温仪器和PI控制器可用于临床前研究.
- 该系统展示了在高温疗法中有效和精确的温度控制的潜力.
- 定制可以使未来的临床应用成为可能.
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