大腦 BRAIN

大腦 BRAIN

大腦是脊椎動(dòng)物頭骨中的一種軟組織。它是高度異質(zhì)性的，因?yàn)樗踪|(zhì)和灰質(zhì)，它們具有不同的力學(xué)行為。常用的腦組織測(cè)試方法有動(dòng)態(tài)剪切、拉伸、壓縮和壓痕。可以用機(jī)械方法測(cè)試大腦的體積特性，也可以在單獨(dú)的樣本中進(jìn)行腦組織的結(jié)構(gòu)建模。需要對(duì)腦組織的機(jī)械特性有全面的了解，才能將組織的機(jī)械反應(yīng)與實(shí)際損傷聯(lián)系起來(lái)。此外，有關(guān)組織特性的準(zhǔn)確信息將允許對(duì)腦組織模型進(jìn)行有限元分析。對(duì)大腦進(jìn)行機(jī)械測(cè)試，以了解其對(duì)損傷、手術(shù)和病理學(xué)的反應(yīng)。此外，需要測(cè)量腦組織的機(jī)械特性，以幫助開(kāi)發(fā)自動(dòng)化手術(shù)工具、機(jī)器人和外科醫(yī)生培訓(xùn)系統(tǒng)。

BRAIN
Brain is a soft tissue contained in the skull of vertebrates. It is highly heteregenous because it contains both white and gray matter, which have different mechanical behaviors. Commonly used test methods for brain tissue are dynamic shear, tension, compression and indentation. Brain can be mechanically tested for bulk properties or in separate samples for constitutive modeling of brain tissue. A complete knowledge of the mechanical properties of brain tissue is needed to relate the mechanical response of the tissue to actual damage. Also, accurate information about tissue properties will allow implementing finite element analysis of brain tissue models. Mechanical testing of brain is performed to learn about its reaction to injury, surgery and pathologies. Moreover, accurately measured mechanical properties of brain tissue are needed to aid in the development of automated surgical tools, robots and surgeon training systems.