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  1. Home
  2. College of Medical Science and Technology / 醫學科技學院
  3. Graduate Institute of Biomedical Informatics / 醫學資訊研究所
  4. 利用類神經網路分類進行心雜音辨識
 
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利用類神經網路分類進行心雜音辨識

Type
conference
Date Issued
2006
Author(s)
謝秋武
楊坤璋
邱泓文
徐建業
Subjects
醫學資訊研究所
會議論文
Abstract
心雜音是臨床診斷上的重要參考,可對心臟
結構或病理問題做早期診斷,而今心臟聽診仍是
確認心雜音的重要技術,且需具備相當經驗,因
此我們將評估利用數位聲音訊號處理及類神經
網路(Artificial Neural Network)的方法在心雜音
分析上的應用。
在本研究中,我們已知心雜音主要頻率範圍
在150Hz 到500Hz 之間,我們對所蒐集的樣本,
其中包含正確和有心雜音的樣本,用快速傅利葉
轉換(Fast Fourier Transform,FFT)數位訊號處理
將雜音頻譜的能量比值擷取出,並且利用類神經
網路,建立自動分析模式。
本研究利用32 個已知正常心音和31 個經過
判定有心雜音的樣本來建立類神經網路模組
(Molding)。經過驗證此系統,在15 個測試組中,
判別率高達100 %。但是目前還沒有辦法區分雜
音的來源區域,以及哪些病因所引起的雜音,希
望將來能在於此基礎上,隨著樣本的擴增以及技
術的精進,發展出自動辨識心雜音的輔助系統。
URI
https://203.71.86.71/handle/123456789/51773
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