彩色视觉 (COLOR VISION) 用于改善手臂治疗针的超声波可视化
Justine M Dupere1, Eric E Brost1, Matthew E Hainy2
1Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota, USA.
Medical physics
|April 17, 2024
概括
这项研究介绍了彩色视觉,一种新的技术,使用机械振动来提高超声波图像上的支臂治疗针的可见性. 这提高了前列腺癌治疗计划的准确性,并促进了自动化数字化.
科学领域:
- 医疗成像医学成像
- 在瘤学瘤学.
- 生物医学工程 生物医学工程
背景情况:
- 高剂量速率支臂治疗对于前列腺癌治疗至关重要.
- 通过直肠超声波 (US) 准确可视化支臂疗法针是具有挑战性的,因为不良的显着性和文物.
- 精确的针头定位对于治疗计划的准确性和质量至关重要.
研究的目的:
- 开发一种技术,在美国的灰度图像上生成布拉基疗法针位置的颜色叠加.
- 创建原型设备,在针中产生振动,产生高对比度的颜色多普勒 (CD) 信号,以改善可视化.
- 引入彩色VISION (用于识别物体性质的振动诱导闪),以提高应用器的显眼性和自动化数字化.
主要方法:
- 在幻影和尸体模型中设计和评估了三种原型振动器件 (200-450 Hz) 与针头植入器.
- 经过测试的执行器连接到针模板上,并将手持的执行器插入到针光线中.
- 在MATLAB中后处理获取的图像,以评估自动化数字化潜力.
主要成果:
- 所有的原型都成功地在轴向和斜向平面上的支架疗法针中产生局部闪.
- 模板安装的执行器提供了优越的振动合和易于使用,相比笔原型.
- CD信号实现了100%的迈克尔森对比度,明显优于B模式成像 (≤40%);自动化数字化原则证明得到了证明.
结论:
- 彩色VISION原型设备有效地使用机械振动来产生US CD闪,准确地突出显示支架疗法针位置.
- 高对比度的注册信号显示了自动化针头数字化和在B模式US上提供实时视觉覆盖的前景.
- 这项技术有可能显著改善支臂疗法治疗的规划和交付.
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