Audio Pre-Processing and Neural Network Models for Identification of Orthopedic Reamers in Use

M. Hanlon, B. Jackson, J. Rice, Joseph Walsh, D. Riordan
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Abstract

In order for a successful outcome of Total Hip Arthroplasty (THA) to occur, implant stability is a key concern. A means to achieve this is ensuring that the implant has an optimum seating within the femur cavity. This is achieved during surgery by progressive reaming of the cavity interior. Both under and over reaming have undesirable effects towards implant longevity and post-operative prognosis, and so through education/experience, orthopedic surgeons have learned to anticipate when optimal reaming occurs. The work presented here is part of a larger research project which seeks to use bone resonance as an indicator of good implant seating. Here we present results of initial work using several neural network models on classification of orthopedic reamer type on the basis of sound signature. These results are discussed in the context of an interesting feature found when comparing differing audio- preprocessing methods. Despite identical audio raw data being used for both representations, the models that used the Mel Spectrograms categorically outperformed those which used the STFT Spectrogram.
音频预处理与神经网络模型在骨科用铰刀识别中的应用
为了使全髋关节置换术(THA)成功,植入物的稳定性是一个关键问题。实现这一目标的一种方法是确保植入物在股骨腔内具有最佳的坐位。这是在手术中通过逐步扩孔腔内部来实现的。扩孔不足和过大都会对种植体寿命和术后预后产生不良影响,因此通过教育/经验,骨科医生已经学会了预测最佳扩孔时间。这里展示的工作是一个更大的研究项目的一部分,该项目旨在利用骨共振作为良好植入物坐位的指标。本文介绍了基于声音特征的几种神经网络模型在骨科铰刀类型分类上的初步工作结果。这些结果是在比较不同音频预处理方法时发现的一个有趣特征的背景下讨论的。尽管两种表示都使用了相同的音频原始数据,但使用Mel谱图的模型明显优于使用STFT谱图的模型。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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