Ultrasound Therapeutic Effect

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Piezoelectric effect was discovered by Currie brothers in 1880. Further, in 1927, Loomis, wood studied the ultrasound therapeutic ability. In 1940, Ludwig and Struthers published first research paper on ultrasound. It was the first pulse-echo mode ultrasound for the detection of gallstones in animal tissues. Howry and Bliss, in 1950 were succeeded in analyzing and depicting the anatomic details of an organ in water bath using B-mode technology. Ultrasound (US) is most widely used diagnostic modality which is cheap as compared to other imaging modalities. Some of its advantages include non-ionizing radiations, real-time data availability, large & scalable imaging depth, portability and cost effectiveness. A highly advanced ultrasound came to a stagnant phase when its hardware was improved along-with its software and algorithms. So, the only place to expand the scope was imaging at cellular and molecular scale. Additionally, providing diagnostic information beyond that of conventional sonography, and usage of contrast agents. To address the cellular and molecular scale, the idea was to spatially localize the contrast between diseased and the health tissue. It is realized that…show more content…
It requires an internal or external energy source to excite the tissue. Further, it measure the motion of the tissue induced by the energy. Now, a qualitative or quantitative analysis of tissue elastic properties is measured form the displacement of tissue. An US can be used to measure elastography, because it has fast imaging capabilities and also a high spatial resolution. Thyroid cancer can be visualized using shear elastography. A benign thyroid nodule shows less stiffness, while a malignant nodule shows maximum stiffness. Consequently, a stiffness parameter could help us conclude a type of cancer, without autopsy. To sum up, if US along with other technique could help diagnose cancer at early stages, it would be
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