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arXiv 2312.03481physics.med-phphysics.acc-phphysics.opticsphysics.plasm-ph
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激光加速高能电子放疗原型机对小鼠肿瘤控制的实验演示

Experimental demonstration of mice tumor control with a laser-accelerated high-energy electron radiotherapy prototype

Zhiyuan Guo, Shuang Liu, Bing Zhou, Junqi Liu, Haiyang Wang, Yang Wan, Yifei Pi, Xiaoyan Wang, Yingyi Mo, Bo Guo, Jianfei Hua, Wei Lu

AI总结:

本文展示了首台自主研发的激光尾波场加速甚高能电子放疗原型机,其紧凑且运行稳定,并在小鼠肿瘤模型中实现了与商用X射线放疗等效的肿瘤控制效果,验证了其临床前研究和未来临床转化的潜力。

摘要:

使用甚高能电子(VHEE)束(50-300 MeV)的放射治疗因其有利的剂量沉积特性而受到广泛关注,能够实现深度穿透并具备超高剂量率治疗的潜力。以紧凑且成本有效的方式递送这些高能电子束的一种有前景的方法是激光尾波场加速(LWFA),它提供了超强的加速梯度。然而,从这一概念过渡到用于肿瘤治疗的功能性机器仍在研究之中。在此,我们展示了首台自主研发的基于LWFA的VHEE放射治疗原型机,具有高度紧凑性(占地小于5平方米)和高运行稳定性(在一个月的时间内得到验证)。随后,我们使用该设备照射植入小鼠模型中的肿瘤。在以精确的肿瘤适形性递送$5.8\pm0.2$ Gy剂量后,所有受照射小鼠均表现出显著的肿瘤生长控制。作为对比,这种肿瘤控制效果与使用等效剂量的商用X射线放射治疗设备所取得的效果相似。这些结果证明了紧凑型激光驱动VHEE系统在涉及小动物模型的临床前研究中的潜力,以及其在癌症治疗中未来临床转化的广阔前景。

英文摘要:

Radiotherapy using very-high-energy electron (VHEE) beams (50-300 MeV) has attracted considerable attention due to its advantageous dose deposition characteristics, enabling deep penetration and the potential for ultra-high dose rate treatment. One promising approach to compactly delivering these high energy electron beams in a cost-effective manner is laser wakefield acceleration (LWFA), which offers ultra-strong accelerating gradients. However, the transition from this concept to a functional machine intended for tumor treatment is still being investigated. Here we present the first self-developed prototype for LWFA-based VHEE radiotherapy, exhibiting high compactness (occupying less than 5 square meters) and high operational stability (validated over a period of one month). Subsequently, we employed this device to irradiate a tumor implanted in a mouse model. Following a dose delivery of $5.8\pm0.2$ Gy with precise tumor conformity, all irradiated mice exhibited pronounced control of tumor growth. For comparison, this tumor-control efficacy was similar to that achieved using commercial X-ray radiotherapy equipment operating at equivalent doses. These results demonstrate the potential of a compact laser-driven VHEE system for preclinical studies involving small animal models and its promising prospects for future clinical translation in cancer therapy.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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