ultrasound scanning

ultrasound scanning

A method of body imaging based on the reflectivity of sound. By using very high frequency (ultrasonic) sound the wavelengths are brought down to the necessary small dimensions. Piezo-electric transducers are used both to generate the waves and to pick up the reflected sound. Ultrasound scanning is believed to be completely safe and is widely used in obstetrics as well as in other disciplines. It can show the position of the placenta, reveal twins at an early stage, show the size and sex of the fetus and detect major fetal abnormalities such as ANENCEPHALY and SPINA BIFIDA. It can measure rates of blood flow in the fetus and can detect certain forms of congenital heart disease. Ultrasound is also widely used to scan fluid-filled organs, especially the heart. Echocardiography can reveal the heart's action in detail. Doppler ultrasound provides essential information on blood flow. Intravenously-injected microbubble agents increase the reflectivity of blood many times and greatly widen the scope of ultrasound scanning.
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Because of the high frequency of rotator cuff tear after shoulder dislocation in patients aged over 40, they should have either urgent ultrasound scanning or MRI.
Unlike X rays, however, ultrasound scanning of at-term bitches is not a good way of deciding how many pups are present.
Tenders are invited for Equipment Ultrasound Scanning Depth + Accessories, Climatic Chamber, Equipment for Determining Thermal Conductivity, Material Strength Tests Non-Corrosion Cycles, Accelerated Plant Exposure to Environmental Conditions, Room with Exposure to Solar Spectrum, Combined with Ultrasonic Betonoscop Sclerometrudigital, Tester Impermeability of Concrete, Corrosion Analyzer.
Caption: Figure 1: A) Diagrammatic representation of cannulae, ultrasound scanning plane and radial artery cross section as seen in the accompanying sonogram.
Ultrasound scanning alone is used more often for women under 35, to avoid the slight risk associated with X-rays.
The purpose of this study ("Evaluation of the repeatability of ultrasound scanning for detection of feline polycystic kidney disease" in the Journal of Feline Medicine and Surgery, 2009) was to demonstrate the repeatability of ultrasound scanning in the detection of PKD and to assess the progression of the disease over time.
A spokeswoman said: "Liverpool Women's have recently undertaken a tender process to appoint a company to support the Trust in its provision of ultrasound scanning.
In 10 egg-producing birds, transcutaneous ultrasound scanning was performed at 3-hour intervals and blood sampling at hourly intervals during a period of at least 48 hours (one egg laying cycle).
There is no epidemiological evidence at present that ultrasound scanning during pregnancy is harmful, but in the context of greatly increased use, caveats have been raised.
Cranial ultrasound scanning significantly predicted developmental outcomes in symptomatic newborns with cytomegalovirus, based on a study of 57 infants reported in the February issue of the Journal of Pediatrics.
B-ultrasound-guided RFA [using RF-2000 System (Radio Therapeutic - USA) expandable by 10 hooks, 450 ultrasound scanning system (Hitachi - Japan)] was performed on 29 patients: 12 males, 17 females.

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