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West Virginia: $36,860 $58,638 50 Arkansas: $36,680 $56,800 51 Mississippi: $35,070 $51,608 52 Puerto Rico: $20,100 [5] No data — American Samoa: No data No data — Guam: No data No data — Northern Mariana Islands: No data No data — U.S. Virgin Islands: No data No data
The occupational risk associated with performing sonography was reported as early as 1985, [11] but it wasn't until the mid-1990's those work-related injuries were widely recognized as a significant problem among sonographers that persists today. [12]
Technicians who use ultrasound to examine the heart chambers, valves, and vessels are referred to as cardiac sonographers. [1] They use ultrasound instrumentation to create images called echocardiograms. An echocardiogram may be performed while the patient is either resting or physically active. Technicians may administer medication to ...
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Ultrasound is defined by the American National Standards Institute as "sound at frequencies greater than 20 kHz". In air at atmospheric pressure, ultrasonic waves have wavelengths of 1.9 cm or less. Ultrasound can be generated at very high frequencies; ultrasound is used for sonochemistry at frequencies up to multiple hundreds of kilohertz.
Virginia has the sixth highest per capita income of any state in the United States of America, at $23,975 (2000). Its personal per capita income is $33,671 (2003). Virginia counties and cities by per capita income (2010). Virginia counties and cities by median family income (2010). Virginia counties and cities by median household income (2010).
Facebook video captures moment graduates flee burst of gunfire. 11:15, ... Virginia has witnessed 58 school shootings since 1971, ...
A 3D ultrasound of a human fetus aged 20 weeks. 3D ultrasound is a medical ultrasound technique, often used in fetal, cardiac, trans-rectal and intra-vascular applications. 3D ultrasound refers specifically to the volume rendering of ultrasound data.