arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1807.04056cs.CVcs.LGstat.ML
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时间卷积网络用于胎儿腹主动脉超声实时的形态分析

Temporal Convolution Networks for Real-Time Abdominal Fetal Aorta Analysis with Ultrasound

King’s College London(伦敦国王学院);University Hospital of Padova(帕多瓦大学医院);University of Padova(帕多瓦大学);University of Warwick(华威大学)

Nicolo' Savioli, Silvia Visentin, Erich Cosmi, Enrico Grisan, Pablo Lamata, Giovanni Montana

摘要:

超声序列的自动分析可以大大提高临床诊断的效率。在这项工作中,我们提出了我们的尝试,自动化的挑战性的任务,测量胎儿腹主动脉的血管直径从超声图像。我们提出了一个神经网络架构,由三个块组成:一个卷积层的成像特征的提取,卷积门控递归单元(C-GRU),用于执行跨视频帧的时间相干性和利用信号的时间冗余,和正则化的损失函数,称为\textit{CyclicLoss},强加我们的先验知识的周期性观察到的信号。我们目前的实验证据表明,所提出的架构可以达到一个准确性大大优于以前提出的方法,提供了一个平均减少的均方误差从$0.31 mm^2$(国家的最先进的)到$0.09 mm^2$,和相对误差减少从$8.1\%$到$5.3\%$。所提出的方法的平均执行速度为每秒289帧,这使得它适合于实时的临床使用。

英文摘要:

The automatic analysis of ultrasound sequences can substantially improve the efficiency of clinical diagnosis. In this work we present our attempt to automate the challenging task of measuring the vascular diameter of the fetal abdominal aorta from ultrasound images. We propose a neural network architecture consisting of three blocks: a convolutional layer for the extraction of imaging features, a Convolution Gated Recurrent Unit (C-GRU) for enforcing the temporal coherence across video frames and exploiting the temporal redundancy of a signal, and a regularized loss function, called \textit{CyclicLoss}, to impose our prior knowledge about the periodicity of the observed signal. We present experimental evidence suggesting that the proposed architecture can reach an accuracy substantially superior to previously proposed methods, providing an average reduction of the mean squared error from $0.31 mm^2$ (state-of-art) to $0.09 mm^2$, and a relative error reduction from $8.1\%$ to $5.3\%$. The mean execution speed of the proposed approach of 289 frames per second makes it suitable for real time clinical use.

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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