Notes in POCUS

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Published	08/31/2023	What is the history of ultrasound and its uses?
Published	08/31/2023	What type of probe is on the left?
Published	08/31/2023	What type of probe is in the middle?
Published	08/31/2023	What type of probe is on the right?
Published	08/31/2023	Describe 1 using U/S terminology.
Published	08/31/2023	Describe 2 using U/S terminology.
Published	08/31/2023	Describe 3 using U/S terminology.
Published	08/31/2023	Describe 4 using U/S terminology
Published	08/31/2023	What is frequency?
Published	08/31/2023	What is a period? (POCUS)
Published	08/31/2023	042599f6bfa74c9aada576f58e917651-ao-1
Published	08/31/2023	In a sound wave, the {{c1::compression}} refers to the point where molecules are pushed together and the {{c1::rarefaction}} is th…
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Published	08/31/2023	{{c1::Frequency}} describes the number of events per unit time, or the number of cycles per second. The unit for {{c1::frequency}} is {{c1::cycles/s}}…
Published	08/31/2023	Ultrasound is {{c1::well-above}} the audible range for humans.
Published	08/31/2023	Most ultrasound used for medical imaging purposes happens in the range of {{c1::1 million to 20 million Hertz (1-20 MHz)}}.
Published	08/31/2023	{{c1::Period}} describes the time it takes for a cycle to occur.
Published	08/31/2023	Period and frequency are {{c1::inversely}} related (the shorter the period, {{c1::the higher}} the frequency).
Published	08/31/2023	Propagation Speed describes {{c1::what speed a sound wave travels through a medium}}.  The speed is determined by the {{c2::stiffness a…
Published	08/31/2023	All ultrasound equipment operates based on the average of all tissue speeds (how fast sound travels through tissue), {{c1::1540m/s}}.
Published	08/31/2023	Wavelength is the distance between {{c1::two corresponding points}} in a cycle, either two peaks, two valleys or between to peaks or valleys.
Published	08/31/2023	λ (wavelength) =
Published	08/31/2023	Wavelength is {{c1::inversely}} related to the frequency.
Published	08/31/2023	So the shorter the {{c1::wavelength}} or the greater the {{c1::frequency}}, the better the image resolution that you're having.... you …
Published	08/31/2023	Shorter {{c1::wavelengths}} (higher {{c1::frequencies}}) do not penetrate deeply into tissues
Published	08/31/2023	If you're imaging something really shallow, such as a vein or artery which is really close to the surface, you'd want to have a probe that has a {{c1:…
Published	08/31/2023	When imaging something that is deep, such as part of the bowel or kidney, you're going to want to choose a probe that has a {{c1::lower}} frequency, w…
Published	08/31/2023	How do ultrasound images appear?
Published	08/31/2023	8ad38079a59940e390ec32493866ddac-ao-1
Published	08/31/2023	8ad38079a59940e390ec32493866ddac-ao-2
Published	08/31/2023	8ad38079a59940e390ec32493866ddac-ao-3
Published	08/31/2023	8ad38079a59940e390ec32493866ddac-ao-4
Published	08/31/2023	The ultrasound machine makes various assumptions in generating an image. These include the following:1) The ultrasound sound beam only travels {{c1::i…
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Published	08/31/2023	Ultrasound Gel used to {{c1::improve contact with skin}} and {{c1::reduce impedance}}.{{c1::Acoustic Impedance}} is the resistance a sound wave e…
Published	08/31/2023	What does 1 do?
Published	08/31/2023	What does 2 do?
Published	08/31/2023	What does 3 do?
Published	08/31/2023	What does 4 do?
Published	08/31/2023	What does 5 do?
Published	08/31/2023	What does 6 do?
Published	08/31/2023	What probe is this and it what is it used to visualize?
Published	08/31/2023	What probe is this and what is it best used to visualize?
Published	08/31/2023	What probe is this?
Published	08/31/2023	22b92298b76d48c7bf51a021a0a41b99-ao-1
Published	08/31/2023	What is sliding in ultrasound?
Published	08/31/2023	What is rotating in ultrasound?
Published	08/31/2023	What is fanning in ultrasound?
Published	08/31/2023	Every probe has a {{c1::marker}} also known as the {{c1::indicator}} which is demarcated by a groove, line, or dot that corresponds to the screen mark…
Published	08/31/2023	When the indicator is pointed to the patients head, the image slices are along the {{c1::median or sagittal}} plane.  This means that the image w…
Published	08/31/2023	When the indicator is pointed to the patients right side, the image slices are {{c1::transverse}}.  This means the image will have…
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Published	08/31/2023	49bcf72a7e0d4ca4a5f5ef316d1e8514-ao-1
Published	08/31/2023	49bcf72a7e0d4ca4a5f5ef316d1e8514-ao-2
Published	08/31/2023	Two properties influence the propagation speed through tissue, {{c1::stiffness (elasticity) and density}}.  {{c1::Stiffness}} describes the …
Published	08/31/2023	Some tissues/organs have an overall bright appearance and are termed {{c1::echogenic/hyperechoic}}. Some structures are fluid filled and are term…
Published	08/31/2023	5b916edf45f54e059f8a6dfad5920114-ao-1
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Published	08/31/2023	The kidney has {{c1::two}} distinct tissue types where the liver has {{c1::one uniform}} tissue types. The liver is {{c1::hyperechoic}} the outer…
Published	08/31/2023	What is this artifact?
Published	08/31/2023	What is this artifact?
Published	08/31/2023	What is this artifact?
Published	08/31/2023	What is this artifact?
Published	08/31/2023	The returning dot on the screen is based on {{c1::the distance the sound traveled}}
Published	08/31/2023	{{c1::Elasticity and density}} of tissue determine sonographic appearance (echogenicity)
Published	08/31/2023	Resolution
Published	08/31/2023	Piezoelectric element
Published	08/31/2023	Sagittal
Published	08/31/2023	Transverse
Published	08/31/2023	The denser the medium, the {{c1::slower}} the propagation speed.
Published	08/31/2023	The stiffer the medium, the {{c1::faster}} the propagation speed
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Status	Last Update	Fields