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A sonographer performing pediatric echocardiography. A sonographer is an allied healthcare professional who specializes in the use of ultrasonic imaging devices to produce diagnostic images, scans, videos or three-dimensional volumes of anatomy and diagnostic data. The requirements for clinical practice vary greatly by country.
The first article on the history of ultrasound was written in 1948. [3] According to its author, during the First World War, a Russian engineer named Chilowski submitted an idea for submarine detection to the French Government. The latter invited Paul Langevin, then Director of the School of Physics and Chemistry in Paris, to evaluate it.
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.
Diagnostic medical sonography (DMS), a branch of diagnostic medical imaging, is the use of imaging by medical ultrasound for medical diagnosis. DMS uses non-ionizing ultrasound to produce 2D and 3D images of the body. In Canada, the credentialing for diagnostic medical sonography is the Canadian Association of Registered Ultrasound Professionals.
Seventh grade (also 7th Grade or Grade 7) is the seventh year of formal or compulsory education. The seventh grade is typically the first or second year of middle school. In the United States, kids in seventh grade are usually around 12–13 years old. Different terms and numbers are used in other parts of the world.
Year 7 is an educational year group in schools in many countries including England, Wales, Australia and New Zealand.It is the seventh full year (or eighth in Australia and England) of compulsory education and is roughly equivalent to grade 6 in the United States and Canada (or to grade 7 for the Australian Year 7).
The Society of Diagnostic Medical Sonography (SDMS) is a nonprofit professional association, representing over 24,000 sonographers and sonography student members across all fifty U.S. states and forty-eight countries, as of 2022. [1]
The Science of Life is a book written by H. G. Wells, Julian Huxley and G. P. Wells, published in three volumes by The Waverley Publishing Company Ltd [2] in 1929–30, giving a popular account of all major aspects of biology as known in the 1920s.