以希伯特理論及音頻共振量測技術 於人工髖關節鬆脫之研究

Study on Evaluation of Total Hip Prosthesis Loosening with Hilbert Spectrum Theory and Sonic Vibration Technique

黃文龍(Wen-Luang Huang)

指導教授 ： 張恆雄

中原大學/工學院/醫學工程研究所/碩士(2001年)

https://doi.org/10.6840/cycu200100383

摘要

摘要
本研究以希伯特黃頻譜轉換（Hilbert Huang Transform ,HHT）之數學理論與非侵入式之音頻共振量測技術，探討全人工髖關節置換手術後，股骨側與髖臼杯之鍵結變化。
訊號處理方面以LabVIEW程式擷取人工髖關節動態訊號，將所得之音頻訊號，以開發之MatLab程式做希伯特黃轉換之頻譜分析，其結果供執行全人工髖關節置換手術臨床監測研究。
比較病患髖關節置換手術前、後，股骨側與髖臼杯之共振頻率漂移量及能量頻譜變化差異，以精準的希伯特黃頻譜轉換的量測技術理論分析，找出髖關節鬆脫現象及手術後不同時期，體內人工髖關節鍵結變化情形，評估全人工髖關節置換後訊號頻譜狀況，進行系統分析，以估証此項設計對生物髖關節系統分析之實務應用。
結果顯示，在訊號模擬方面：不論是暫態或時變訊號經由希伯特黃轉換頻譜比傅立葉頻譜其解析能力較高;在人工髖關節訊號量測方面：顯示施行全人工髖關節手術經過一段時間後鍵結良好者與正常人比較，頻譜訊號會趨於穩定現象;髖關節鬆脫者與正常人比較則有顯著差異。

關鍵詞：音頻共振
希伯特黃轉換
全人工髖關節置換手術

關鍵字

希伯特黃轉換 ； 音頻共振 ； 全人工髖關節置換手術

並列摘要

ABSTRACT
This research used the mathematic theory of the Hilbert Huang Transform (HHT) and the non-invasive sonic vibration measurement technology to probe into the bonding variation of stem and acetabulum after Total Hip Arthroplasty (THA).

Regarding to signal processing, we applied LabVIEW software package to capture dynamic signals of artificial hip joint. Then we used well-developed MatLab software package to perform the HHT frequency spectrum analysis. The results of HHT can be applied to clinical studies of THA.

The variation differences of the resonant frequency and energy spectrum of patient at the stem-femur and acetabulum location before and after operations were compared in this study. The advanced precise HHT measurement theory was applied to find out the phenomena of hip loosening and the bonding variations of artificial hip joint during different postoperative periods. Furthermore, this technology can be used to evaluate the signal spectrum after THA and then to proceed system analysis. This design can be proved to be a practical application of hip organism analysis system from this technology.

The results can be divided into two parts. With regard to signal simulation, the resolution ability of Hilbert Transform is higher than Fourier Transform regardless of temporary state or time-varying signal. In regard of signal measurement of artificial hip joint, it showed that the spectrum signals of good bonding had the tendency to become stable when compared to normal people after THA were performed over a period of time. On the other hand, there were significant differences of spectrum signal between hip loosening patient and normal people.

Key Words: Sonic Vibration
Hilbert Huang Transform (HHT)
Total Hip Arthroplasty (THA)

並列關鍵字

Hilbert Huang Transform (HHT) ； Sonic Vibration ； Total Hip Arthroplasty (THA)

參考文獻

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