Renaissance Ultrasound Blog

October 13, 2009

Elastography

Filed under: Uncategorized — Leslie @ 2:37 am

For over 15 years, the technology of Elastography has been researched and studied.  Elastography is rooted in the practice of palpation, one of the oldest concepts in medicine. When an abnormal mass is discovered in a patient, an important aspect of the initial clinical examination is physically palpating the mass to assess its stiffness.  Elastography takes this concept one step further by using ultrasound to perform sophisticated and sensitive measurements of relative stiffness and creating detailed images depicting this information.  The technical term for the way a solid mass moves in response to a force is called elasticity. Scientists say that cancerous tumors have very low elasticity – they do not change shape readily when pressed. It is this property that enables Elastography to work. Elastography refers to the measurement of elastic properties of tissues, based on the well-established principle that malignant tissue is harder than benign tissue.  Research has shown that normal tissue and fat have smaller elasticity profiles, while hard areas, such as cancers, are larger than the gray-scale appearance.

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