頁籤選單縮合
題名 | Acoustic Soft Tissue Equivalent Liquid |
---|---|
作者姓名(中文) | 洪炳南; 陳秋民; | 書刊名 | 中原學報 |
卷期 | 13 1984.12[民73.12] |
頁次 | 頁42-46 |
分類號 | 410.1644 |
關鍵詞 | |
語文 | 英文(English) |
中文摘要 | 醫用超音波測試器所用的理想材料,其聲速、衰減係數及散射必須與人體組織在同一範圍,尤其是人體軟組織。本研究己尋得一種與人體組織聲學性質相似的懸浮液組成,可以依室溫取不同比例之乙二醇及蒸餾水之混合物做為背景溶液,另加入石墨粉及CMC使其均勻而穩定的分佈於溶液中。衰減係數可得到與人體組織相近的,於lMHz時約在1dB/cm附近,而這衰減係數可以藉著石墨粉的濃度變化而改變,且與頻率成比例,其聲速於室溫時相當穩定可藉乙二醇的濃度維持在1540米/秒左右。所以這種懸浮液組成可以用來設計測試器以便用來檢驗醫用超音波波束特性及析像能力。 |
英文摘要 | An ideal material for constructing ultrasound test objects should have the same ranges of speeds of sound, attenuation coefficients, and scattering coeffcients as human tissue, especially for soft tissue. We have discovered an acoustic soft tissue equivalent material in the form of liquidplus suspension. The background solution is the mixture of different percent ethylene glycol and distilled water at room temperature with the addition of graphite powder and CMC in order to get a homogeneous emulsion. The magnitude of the attenuation coefficient is around 1 dB/cm at 1 MHz and can be changed by varying the concentration of graphite. The speed of sound can be remained at 1540 m/sec at room temperature, depending primariIy upon the concentration of ethylene glycol. This soft tissue equivalent liquid can be used to design a diagnostic ultrasound test object. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。