Ultrasonography (US)

US

Ultrasonography (US) — non-invasive study of the human body using ultrasonic waves.

Physical bases

The method is based on the scanning of biological structures by ultrasonic vibrations at frequencies greater than 1 MHz (generally from 2 to 12 MHz)

The basic principle of the method: the ultrasound beam propagates in a straight line in the tissues, partially reflected at the borders of transmission mediums with different acoustic density. An appropriate treatment of the reflected signal provides valuable information about the structural and functional state of different organs and systems.

Using a variety of advanced technologies, including the one based on the Doppler effect, as well as the use of digital processing of the information make ultrasonography one of the most accurate methods of diagnostics, and the relatively low cost, safety and accessibility of the method have made it one of the most common imaging diagnostics methods in medicine.

Equipment

The research is conducted on specially designed ultrasonic scanners, which have a wide variety of sensors for use in their respective fields of diagnostics. The ultrasonic sensor is the most important element of the ultrasound system, the correct choice of which is essential for the quality of the final result of the study.

Our clinic uses ultrasonic scanners – modern universal full digital color Doppler systems equipped with broadband sensors with electronic scanning. All three traditional types of sensors, namely – linear, convex (including microconvex and specialized intracavitary) and sector (phased array), with a total range of frequencies from 2 to 12 MHz, allow to carry out research in virtually all areas of ultrasound diagnostics.

Application

Today, in our hospital ultrasonography is the most widely used in cardiology (echocardiography, no age limit), obstetrics and gynecology, urology, abdominal organs and retroperitoneal space, superficial organs (mainly thyroid and mammary glands, including, when needed, a fine-needle aspiration biopsy under ultrasound guidance). In some cases, ultrasonography is carried out in ophthalmology, angiology and pediatrics; as an auxiliary method in the pleural puncture and for the differential diagnosis of tumors of the chest cavity, including the mediastinum.