通过深度神经网络和对输入和输出数据格式的简单更改,改善呼吸信号预测
Ryusuke Hirai1,2,3, Shinichiro Mori1, Hiroki Suyari3
1National Institutes for Quantum Science and Technology, Quantum Life and Medical Science Directorate, Institute for Quantum Medical Science, Inage-ku, Chiba 263-8555, Japan.
使用循环神经网络 (RNN) 的新型深度神经网络 (DNN) 模型显著改善了放射治疗的呼吸门准确性. 这种先进的模型提高了预测准确度,减少了计算时间,有利于治疗.
科学领域:
- 医学物理 医学物理
- 辐射疗法 辐射疗法
- 人工智能在医学中的应用
背景情况:
- 放射治疗期间的呼吸运动可能会损害治疗的准确性,并延长手术时间.
- 现有的呼吸门深度神经网络 (DNN) 模型在准确性和效率方面存在局限性.
- 准确预测呼吸运动对于实时瘤跟踪和有效的辐射输送至关重要.
研究的目的:
- 开发和评估一个通用的深度神经网络 (DNN) 模型,用于预测患者特定的呼吸运动.
- 为了提高呼吸道门的准确性和提高辐射治疗的吞吐量.
- 将新型模型的性能与现有的LSTM和非经常性DNN模型进行比较.
主要方法:
- 开发了一种使用长短期记忆 (LSTM) 的新型循环神经网络 (RNN) 模型.
- 该模型采用二维块数据输入和序列预测,以提高准确性和减少计算.
- 在434个回顾性临床数据集上接受了培训和测试,在各种预测窗口中评估了预测准确性和基于振幅的门.
主要成果:
- 新的RNN模型表现出卓越的准确性,平均绝对误差分别为0.036,0.084和0.119在133,333和533毫秒的预测窗口.
- 在测试的预测窗口中,基于振幅的门准确率达到98.3%,95.8%和92.7%,新模型在测试的预测窗口中达到98.3%,95.8%和92.7%.
- 该模型实现了具有竞争力的计算时间 (0.66毫秒),同时在预测准确性和网关效率方面表现优于其他模型.
结论:
- 开发的基于RNN的算法有效地预测呼吸信号和瘤位置,提高了放射治疗的精度.
- 这种通用模型在呼吸道门技术中提供了显著的进步,提高了准确性和治疗效率.
- 该模型有望在临床放射治疗的呼吸信号预测中得到广泛应用.
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