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The American Registry for Diagnostic Medical Sonography (ARDMS), incorporated in June 1975, is an independent nonprofit organization that administers examinations and awards credentials in the areas of diagnostic medical sonography, diagnostic cardiac sonography, vascular technology, physicians’ vascular interpretation, musculoskeletal sonography and midwifery ultrasound.
National Board Certification is a voluntary advanced professional certification based on the NBPTS standards. There are 25 different certificates available. Candidates for National Board Certification must complete four components: three portfolio entries, submitted online, and a computer-based assessment, which is administered at a testing center.
A Praxis test is one of a series of American teacher certification exams written and administered by the Educational Testing Service.Various Praxis tests are usually required before, during, and after teacher training courses in the U.S.
The American Board for Certification of Teacher Excellence, often referred to as the American Board, was launched with a $5 million federal grant from the U.S. Department of Education in 2001. [1] The non-partisan, non-profit organization 's mission is to certify subject experts, experienced professionals, career changers, and military veterans ...
A school timetable consists of a list of the complete set of offered courses, as well as the time and place of each course offered. The purposes of the school timetable are to inform teachers when and where they teach each course, and to enable students to enroll in a subset of courses without schedule conflicts. [1]
Medical ultrasound includes diagnostic techniques (mainly imaging techniques) using ultrasound, as well as therapeutic applications of ultrasound. In diagnosis, it is used to create an image of internal body structures such as tendons, muscles, joints, blood vessels, and internal organs, to measure some characteristics (e.g., distances and velocities) or to generate an informative audible sound.
The transducer may be used in contact with the skin, as in fetal ultrasound imaging, or inserted into a body opening such as the rectum or vagina. Clinicians who perform ultrasound-guided procedures often use a probe positioning system to hold the ultrasonic transducer. [9] Compared to other medical imaging modalities, ultrasound has several ...
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.