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Rodent Brain Microinjection to Study Molecular Substrates of Motivated Behavior
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磁力共振成像条件下的偏心管注射针:设计,制造和动物试验

Anthony L Gunderman1, Ehud J Schmidt2, Qingyu Xiao1

  • 1Biomedical Engineering Department, Georgia Institute of Technology/Emory University, Atlanta, GA, 30318 USA.

IEEE/ASME transactions on mechatronics : a joint publication of the IEEE Industrial Electronics Society and the ASME Dynamic Systems and Control Division
|August 6, 2024
PubMed
概括

这项研究引入了一种新的MRI导向针,用于注射水凝间隔器,提高放射治疗的精度. 该技术成功地在组织之间创造了空间,提高了接受癌症治疗的患者的安全性.

关键词:
活动追踪 活动追踪注射针注射针的使用方法在MRI条件下.辐射疗法 辐射疗法

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科学领域:

  • 医学物理 医学物理
  • 生物医学工程 生物医学工程
  • 放射学 放射学是一门学科.

背景情况:

  • 放射治疗需要精确的向,以节省健康的组织,特别是在小的瘤组织空间.
  • 可注射的水凝间隔器可以创建分离,但在可视化和准确放置方面面临挑战.
  • 现有的方法缺乏足够的目标可视化和设备跟踪,以有效地部署水凝.

研究的目的:

  • 开发和验证一种新的MRI追踪注射针,用于精确部署水凝间隔器.
  • 克服与传统方法相关的目标可视化和设备跟踪方面的局限性.
  • 通过改善组织节约,提高放射治疗的安全性和有效性.

主要方法:

  • 开发一种与MR追踪技术集成的新型注射针.
  • 专用注射针的制造方法.
  • 使用agar幻影进行基板验证.
  • 在前列腺幻体和猪模型中进行MRI引导的验证.
  • 使用T2加权的MRI可视化间隔器口袋.

主要成果:

  • 这种新型针能够在T2权重的MRI上准确地可视化水凝间隔器口袋.
  • 在猪的直阴隔膜中成功创建了间隔口袋.
  • 显示前后阴道直肠间距平均增加12 ± 2毫米.
  • 在一个相关的解剖位置验证了MR追踪技术的可行性和准确性.

结论:

  • 磁共振跟踪注射针是精确部署水凝间隔器的可行工具.
  • 这种技术显著提高了可视化和准确性,在创建用于放射治疗的组织分离.
  • 这些发现支持这种方法的潜力,通过提高安全性和有效性来提高放射治疗结果.