Category: U
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Umbilical circulation
The circulation of blood from the mother’s bloodstream through the umbilical cord into the fetus.
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Umbilical
Referring to the navel. Describing the aperture within the abdominal wall through which the blood vessels originating from the placenta enter. Related to the navel, its cord, or its associated blood vessels.
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Ultraviolet radiation
Short invisible rays of ultraviolet light. Invisible short-wavelength radiation; it is contained in sunlight, but much of it is absorbed by the atmosphere before reaching the earth, where it causes tanning and burning of the skin. Artificial sources of ultraviolet radiation (e.g., iron or mercury vapor arc in ultraviolet lamps) are sometimes used in medicine…
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Ultraviolet lamp
A lamp which gives off ultraviolet rays. A lamp that produces light with a wavelength in the range of 180 to 400 nm. It is used to treat certain skin conditions such as psoriasis or T-cell lymphoma, to promote wound healing by destroying bacteria, and to tan the skin. Ultraviolet lamps produce light within specific…
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Ultrasound treatment
The treatment of soft tissue inflammation using ultrasound waves. The use of sound waves to produce heat internally to treat an injured joint or muscle and other musculoskeletal conditions. The deep heat promotes healing by increasing blood flow to the affected area. Ultrasound treatment is sometimes used in physical therapy. High-frequency sound waves are employed…
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Ultrasound scanning
A method of gathering information about the body by taking images using high-frequency sound waves. Also known as sonography or ultrasonography; a diagnostic screening technique that uses high-frequency sound waves to create images of internal body structures. Because ultrasound scanning does not involve exposure to ionizing radiation (as X rays do), it is a safe…
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Ultrasound marker
An unusual physical characteristic seen in an ultrasound examination of a fetus which is an indication of the existence of a genetic or developmental disorder.
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Ultrasonotomography
The procedure of making images using ultrasound of organs which are placed at different depths inside the body. The use of ultrasound to examine the internal structure of the body by producing images of the reflections from different) depths. A picture of the structures within a ‘slice’ of the body can be built up, in…
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Ultrasonograph
A machine which takes pictures of internal organs, using ultrasound.
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Ultrasonogram
A picture made with ultrasound for the purpose of medical examination or diagnosis. Use of sound waves to assess the body structures and create computerized images for study. The image produced by use of ultrasonography. A visual representation of the ultrasonic wave captured and recorded on photographic film. An imaging technique employs high-frequency sound waves,…