下背痛病人之下背肌肉電特性之研究

A Study of the Electrical Properties of the Low Back Muscles of Low Back Pain Patients

楊詠琮(yungtsungyang)

指導教授 ： 程德勝 ； 蕭進松

亞洲大學/資訊學院/光電與通訊學系/碩士(2008年)

摘要

下背痛是非常普遍的疾病，令人感到困擾而且下背痛會導致病人失去工作能力，目前沒有任何其他獨立的醫療條件。全球人口有60至80%的人，在一生中經歷過下背痛。在1998年台灣超過2.14萬位病患因下背痛就醫，而且花費在下背痛的醫療費用超過30億新台幣。
這項研究的目的是研究下背痛病患下背肌肉的生理變化，為了開發一種新診斷方法即bioimpedance，提供可信賴、低成本、非侵入性，以及即時性診斷與肌肉相關的腰痛。
總共量測九個正常人和九個病人（11個男生和7個女生，平均年齡20歲到60歲）。這項研究使用一台精密阻抗分析器(Wayne Kerr 6420C)量測全部阻抗數據。這研究選擇7個量測頻率，包括20Hz、25 kHz、50 kHz、200 kHz、800 kHz、3.2 MHz 和10 MHz，使用250mV的電壓通過人體，量測得到下列數據 impedance (Z)， phase angle ()，real part of impedance (R) and imaginary part of impedance (X)，評估正常人和下背痛病人的下背肌肉是否有意義的差異性存在。研究發現正常人和下背痛病人的下背肌肉在800kz和3.2MHz的標準化阻抗值有相當大的差異。結論，bioimpedance在特定的頻率是可能有希望用在診斷下背痛肌肉的技術。

關鍵字

下背痛

並列摘要

Low back pain is a common ailment, affecting people of all backgrounds and resulting in the loss of more working days than any other single medical condition. Some 60–80% of the global population experience low back pain during their lifetime. In Taiwan more than 2.14 million patients sought medical care for back pain in 1998 and that medical cost alone exceeded 3 billion New Taiwan Dollars.
The aim of this study was to study the physiological changes of low back muscles of low back pain patients in order to develop a new approach, namely bioimpedance, for reliable, low-cost, non-invasive, and real-time diagnosis of muscle-related low back pain.
Nine normal subjects and Nine patients (11 men and 7 women, age range 20-60) participated in this study. A precision impedance analyzer (Wayne Kerr 6420C) was used for all impedance measurements. Measurements were performed at seven frequencies of 20Hz, 25KHz, 50KHz, 200KHz, 800KHz, 3.2MHz and 10MHz, with the amplitude of the applied voltage limited to 200mV. Impedance, phase angle, real part of impedance, and imaginary part of impedance were assessed to see if significant difference in values obtained in normal and patient low back muscle existed. It was found that the normalized impedance of the low back muscle of the normal group was significant greater than that of low back pain patient group at the frequencies of 800KHz and 3.2MHz. In conclusion, bioimpedance at a particular frequency is a potentially promising technique for the diagnosis of muscle-related low back pain.

並列關鍵字

Low back pain ； low back muscles

參考文獻

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