ULTRASOUND APPLICATIONS TO MEDICINE PART I: PHYSICAL PRINCIPLES.
Aplicaciones de ultrasonido en medicina. Parte I: Principios Físicos
Keywords:Attenuation, Ultrasound, Frequency, Wave, Piezoelectric, Reflection, Refraction, Resolution, Transducer, Ultrasound.
It describes applications of ultrasound (U.S.) in medicine and its importance from an extensive review of the state of the art, displaying not only relevant in the diagnosis, but a growing interest in the therapeutic treatment, not counting other nonmedical promising developments in sectors such as industry, food, biotech, cosmetic, chemical, nanotechnology, veterinary, etc.., which are not addressed in this paper.
To understand the operation of ultrasonic ultrasound machine and all its components, mainly the transducer, and the versatility of medical uses, it is necessary to systematically address the principles of the U.S. wave properties such as reflection, refraction and absorption, and physical quantities associated with the description of these phenomena, in which have a technological characteristics, namely: reflection factor, refractive index, attenuation, resolving power, density, intensity, frequency and impedance.