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Stavros (12-02-2018) This is a presentation of our choice.

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Stavros (12-02-2018) This is a presentation of our choice.

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http://bit.ly/2EWeL0O

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Ultrasound imaging (sonography) is a diagnostic medical procedure that uses high-frequency sound waves to produce dynamic visual images of organs, tissues or blood flow inside the body

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Description -short text- is selected by Diana's post for the timeline.
Your team has not a single right photo for the timeline. A suggestion for timeline's photo is in the following post. So, either a) you comment under admins suggestion if you agree with that photo OR b) you post right photos and you vote. Deadline is one week for this.
As none of your photos is ok your team has no photos in dotstorming BUT you HAVE TO vote the other photos in dotstorming

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The apparatus used in George Ludwig's 1950 paper on ultrasound transmission in mammalian tissues. This was after the design from Pellam and Galt at M.I.T. in 1946, used in the measurement of ultrasonic transmission in liquids.
Left: oscilloscope, Center: Delay tank, Right: pulse forming network, oscillator, attenuator, and receiver.

http://www.ob-ultrasound.net/ludwig_apparatus.html

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This is a new square photo for the timeline.

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Ultrasound imaging

7.10.1949

After the French physicist Pierre Curie’s discovery of piezoelectricity in 1880, ultrasonic waves could be deliberately generated for industry. Thereafter, in 1940, the American acoustical physicist Floyd Firestone devised the first ultrasonic echo imaging device, the Supersonic Reflectoscope, to detect internal flaws in metal castings. In 1941, the Austrian neurologist Karl Theo Dussik was in collaboration with his brother, Friedreich, a physicist, likely, the first person to ultrasonically echo image the human body, outlining thereby the ventricles of a human brain. Ultrasonic energy was first applied to the human body for medical purposes by Dr George Ludwig at the Naval Medical Research Institute, Bethesda, Maryland in the late 1940s.English-born physicist John Wild (1914–2009) first used ultrasound to assess the thickness of bowel tissue as early as 1949; he has been described as the "father of medical ultrasound". Subsequent advances in the field took place concurrently in several countries. But it was not until 1963 when Meyerdirk & Wright launched production of the first commercial hand-held articulated arm compound contact B-mode scanner that ultrasound became generally available for medical use. Medical ultrasound (also known as diagnostic sonography or ultrasonography) is a diagnostic imaging technique based on the application of ultrasound. It is used to see internal body structures such as tendons, muscles, joints,blood vessels and internal organs. Its aim is often to find a source of a disease or to exclude any pathology. The practice of examining pregnant women using ultrasound is called obstetric ultrasound, and is widely used.
Ultrasound is sound waves with frequencies which are higher than those audible to humans (>20,000 Hz). Ultrasonic images also known as sonograms are made by sending pulses of ultrasound into tissue using a probe. The sound echoes off the tissue; with different tissues reflecting varying degrees of sound. These echoes are recorded and displayed as an image to the operator.
Many different types of images can be formed using sonographic instruments. The most well-known type is a B-mode image, which displays the acoustic impedance of a two-dimensional cross-section of tissue. Other types of image can display blood flow, motion of tissue over time, the location of blood, the presence of specific molecules, the stiffness of tissue, or the anatomy of a three-dimensional region.

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rays p 18 μέρες
By Administratotrs: 1) Please post your name!!! 2) we are looking for a photo of your invention to be posted in the timeline. Photo should be SQUARE > 500 pixels. All members of the team should vote (using stars on the comments of ach post so that we know what you have decided) 3) do not just copy-paste. You must read the information and type by your own words the important part and finish your post with a

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Medical ultrasound (also known as diagnostic sonography or ultrasonography) is a diagnostic imaging technique based on the application of ultrasound. It is used to see internal body structures such as tendons, muscles, joints,blood vessels and internal organs. Its aim is often to find a source of a disease or to exclude any pathology. The practice of examining pregnant women using ultrasound is called obstetric ultrasound, and is widely used.

Ultrasound is sound waves with frequencies which are higher than those audible to humans (>20,000 Hz). Ultrasonic images also known as sonograms are made by sending pulses of ultrasound into tissue using a probe. The sound echoes off the tissue; with different tissues reflecting varying degrees of sound. These echoes are recorded and displayed as an image to the operator.

Many different types of images can be formed using sonographic instruments. The most well-known type is a B-mode image, which displays the acoustic impedance of a two-dimensional cross-section of tissue. Other types of image can display blood flow, motion of tissue over time, the location of blood, the presence of specific molecules, the stiffness of tissue, or the anatomy of a three-dimensional region.

Compared to other prominent methods of medical imaging, ultrasound has several advantages. It provides images in real-time, it is portable and can be brought to the bedside, it is substantially lower in cost, and it does not use harmful ionizing radiation. Drawbacks of ultrasonography include various limits on its field of view including patient cooperation and physique, difficulty imaging structures behind bone and air, and its dependence on a skilled operator.

Sources:Wikipedia

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The October 7 ,1949 , Dr George D Ludwig bas been developped the ultrasound Imaging
The description :Ultrasound imaging (sonography) uses high-frequency sound waves to view inside the body. Because ultrasound images are captured in real-time, they can also show movement of the body's internal organs as well as blood flowing through the blood vessels. Unlike X-ray imaging, there is no ionizing radiation exposure associated with ultrasound imaging.
Uses:Ultrasound imaging is a medical tool that can help a physician evaluate, diagnose and treat medical conditions.
Sources:https://www.fda.gov/Radiation-EmittingProducts/RadiationEmittingProductsandProcedures/MedicalImaging/ucm115357.htm

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On October, 7, 1949, Dr George D Ludwig has developped a new techique for detection and localisation of the gallstones or other foreign bodies lodged in the soft tissues of the body; ultrasound is a type of imaging, that uses high-frequency sound waves to look at organs and structures inside the body; health care professionals use it to view the heart, blood vessels, kidneys, liver, and other organs.Sources: https://web.archive.org/web/20060213091019/http://www.obgyn.net:80/us/images/DOD_doc_GDL_ultrasound.jpg
https://web.archive.org/web/20060203095151/http://www.obgyn.net:80/us/us.asp?page=feature/first_medical_use_ultrasound