Interest in the use of ultrasound in medicine and biology may be explained by the possibility of using ultrasonic waves active influence on living tissues and by the possibility of obtaining information about a certain tissues themselves. Ultrasound diagnosis is an extremely effective method of inspection that allow to quickly and safely evaluate the condition (structural and functional) of many organs and systems: heart and blood vessels, liver and biliary tract, spleen and pancreas. Ultrasound has a diverse and powerful biological effects. This is manifested in the form of mechanical, thermal, chemical and physical phenomena. Increasing the temperature of tissue as a result of exposure to ultrasound is the first mechanism that is considered as a possible biological effects. TI gives a relative indication of temperature increase opportunities to a certain level for the ultrasonic beam. Therefore, preference should be given devices and sensors, which are able to provide a satisfactory image quality at minimum rates of MI by default.
Another type is the mechanical action implies cavitation, which leads to breaks in the place of passage of the ultrasonic wave. These phenomena occur when high intensity ultrasound exposed to biological tissue, and in certain conditions high intensity is desirable, for example, physiotherapy practice. “Several clinical high-intensity focused ultrasound projects have been conducted by various research groups, and results have shown the technique is safe, effective, and feasible in clinical
application”. The final reasoned opinion on the risks and benefits of ultrasound must be made by the physician responsible for the patient. Since the main causes unnecessary exposure are the indifference of the medical community and the lack of influence of professional organizations and regulatory authorities in the field of clinical research. Structurally, the equipment for ultrasonic medical diagnostics reliably protect patients from possible harmful effects of the sound energy. In particular it relates to an ultrasonic study in obstetrics.
Bibliography
Orsi, Franco, Lian Zhang, Paolo Arnone, Gianluigi Orgera, Guido Bonomo, Paolo Della Vigna, Lorenzo Monfardini et al. "High-intensity focused ultrasound ablation: effective and safe therapy for solid tumors in difficult locations." American Journal of Roentgenology 195, no. 3 (2010): W245-W252.
