exposure to ultrasound

См. также в других словарях:

• Ultrasound — Not to be confused with Supersonic .Ultrasound is cyclic sound pressure with a frequency greater than the upper limit of human hearing. Although this limit varies from person to person, it is approximately 20 kilohertz (20,000 hertz) in healthy,… …   Wikipedia

• Ultrasound during pregnancy — Ultrasound imaging has been done during pregnancy for over three decades. It has proved to be a very useful and very effective diagnostic procedure. A number of epidemiological studies of intrauterine ultrasound exposure have been done to look at …   Medical dictionary

• Sound from ultrasound — Contents 1 Parametric array 2 Applications 2.1 Commercial advertising …   Wikipedia

• Therapeutic ultrasound — refers generally to any type of procedure that uses ultrasound for therapeutic benefit. This includes HIFU, lithotripsy, targeted ultrasound drug delivery, trans dermal ultrasound drug delivery, ultrasound hemostasis, and ultrasound assisted… …   Wikipedia

• Intrauterine ultrasound — Creating an image of the developing fetus within the uterus by means of measuring the vibrations returned when a device emits high frequency sound waves. Ultrasound imaging has been done during pregnancy for over three decades. It has proved to… …   Medical dictionary

• Causes of autism — Autism and autism spectrum disorders are complex neurodevelopmental disorders. Many causes of autism have been proposed, but its theory of causation is still incomplete. Heritability contributes about 90% of the risk of a child developing autism …   Wikipedia

• Medical ultrasonography — This article is about using ultrasound to image the human body. For imaging of animals in research, see Preclinical imaging. Sonography redirects here. For the tactile alphabet called sonography , see Night writing. Medical ultrasonography… …   Wikipedia

• Less-lethal weapon — Less lethal weapons, less than lethal weapons, non lethal weapons, non deadly weapons, or, more recently, compliance weapons are weapons intended to be unlikely to kill or to cause great bodily injury to a living target. In the past, police (or… …   Wikipedia

• Obstetric ultrasonography — Intervention Obstetric sonogram of a fetus at 16 weeks. The bright white circle center right is the head, which faces to the left. Features include the forehead at 10 o clock, the left ear toward the center at 7 o clock and the right hand… …   Wikipedia

• Directed-energy weapon — This article is about practical experiments with energy weapons. For fictional uses, see raygun. Humvee with Active Denial System mounted A directed energy weapon (DEW) emits energy in an aimed direction without the means of a projectile. It… …   Wikipedia

• High-energy radio-frequency weapons — (HERF) or High Power Radio Frequency weapons (HPRF) are weapons that use high intensity radio waves to disrupt electronics. They are a type of directed energy weapon. They operate similarly to electromagnetic pulse (EMP) devices, by inducing… …   Wikipedia