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在CT引导的热废除过程中进行温度测绘:使用光谱CT的可行性证明和内部验证
Kuan Zhang1, Andrea Ferrero1, Myung-Ho In1
1Department of Radiology, Mayo Clinic, Rochester, MN, United States of America.
Physics in medicine and biology
|April 30, 2024
概括
光谱计算机断层扫描 (CT) 可以量化热除过程中的局部温度变化. 这种技术将电子密度变化映射到温度,有助于瘤治疗监测.
科学领域:
- 医疗成像医学成像
- 生物物理学的生物物理.
- 放射学 放射学是一门学科.
背景情况:
- 传统的计算机断层扫描 (CT) 缺乏用于皮肤穿治疗的定量热数据.
- 目前的方法只提供了瘤切除过程中热变化的定性视觉线索.
研究的目的:
- 研究光谱CT在模仿组织材料中量化局部热变化的能力.
- 评估CT信号在不同温度和物理阶段的变化.
主要方法:
- 实验使用了一个人形幻象与水基凝和橄油.
- 临床上使用的废弃装置诱导了热变化,由光纤传感器监测.
- 光谱CT获得了电子密度加权图像,以计算热体积膨胀系数.
主要成果:
- 经过实验确定的膨胀系数与已公布的值非常相匹配 (变化不超过5%).
- 一个概念验证CT生成的温度图显示了信号与温度的相关性.
- 光谱CT成功估计了测试材料和相中的局部温度变化.
结论:
- 光谱CT成像可以在热消光过程中提供定量温度映射.
- 这项技术有可能提高瘤治疗的监测和精度.
- 这些发现支持光谱CT作为热废除疗法的宝贵工具.
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