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治疗规划策略 治疗前列腺癌间歇性超声波切除的治疗策略
Pragya Gupta1, Tamas Heffter2, Muhammad Zubair3
1Department of Radiation OncologyUniversity of California San Francisco San Francisco CA 94115 USA.
IEEE open journal of engineering in medicine and biology
|June 20, 2024
概括
这项研究开发了患者特定的3D模型,用于使用间歇性超声波进行前列腺癌热除. 有限差异时间域 (FDTD) 模拟允许精确规划有效的癌症治疗和正常组织保护.
科学领域:
- 医学物理 医学物理
- 在瘤学瘤学.
- 生物医学工程 生物医学工程
背景情况:
- 前列腺癌的治疗往往涉及热除.
- 精确的规划对于有效的切除和最小化对周围组织的损伤至关重要.
- 间歇性超声波为向热疗法提供了一种最少的侵入性方法.
研究的目的:
- 通过有限差异时间域 (FDTD) 模拟,开发针对患者的前列腺癌热切除除3D模型.
- 将这些模型与FDA批准的以导管为基础的间歇性超声波系统集成,用于预治疗规划.
- 为了实现前列腺癌的选择性热切除除.
主要方法:
- 开发了一个3D广义前列腺模型,用于模拟温度和热剂量配置文件.
- 采用先验规划,使用预先计算的热剂量和同温云来选择和定位设备.
- 使用患者特定的3D解剖建模来进行符合性切除,可选的基于温度的反控制和冷却.
主要成果:
- 对一般性前列腺组织进行模拟的360个治疗方案,产生可选择的0.8-3.0厘米径向和0.8-5.3厘米轴向的切除区域.
- 在12例T2/T3前列腺疾病中证明了患者特异性3D热治疗建模的适用性,用于焦点,象限和半腺切除.
- 展示了用于试点反控制的温度值和用于保持安全温度限制的二元功率控制的温度值的使用.
结论:
- 针对前列腺的特定模拟生成了一个热剂量分布库,以优化应用器定位和指导性在术前规划中.
- 针对患者的3D预期治疗规划与可选的基于温度的反控制证明对单个和多个应用者策略有效.
- 开发的技术可以有效地切除焦点前列腺疾病,同时保护正常组织.
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