- Study guides, Class notes & Summaries

Ultrasound velocity is higher in denser tissue? True/False - correct answers True When individual ultrasound waves combine, the process is called 1. Attenuation 2. Interference 3. Diffusion 4. Reflection - correct answers 2. Interference When ultrasound waves return directly after interacting with an interface, the process is called 1. Attenuation 2. Interference 3. Diffusion 4. Reflection - correct answers 4. Reflection The conversion of mechanical impulses (sound waves) to...

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5 pages

Written in 2026/2027

Grade A+

RealGrades

What is ultrasound? - correct answers Sound above the frequency of human hearing - greater than 20kHz sonographer - correct answers one who uses sound waves to create an image What documentation is necessary for ultrasound studies before the exam? - correct answers Ultrasound request form, patient clinical history (ICD-10-CM) What documentation is necessary for ultrasound studies during an exam? - correct answers documentation of ultrasound images using universal of facility protocols ...

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2 pages

Written in 2026/2027

Grade A+

RealGrades

What is ultrasound? - correct answers Sound above the frequency of human hearing (20,000 Hz) What happens to ultrasound when it hits a different medium? - correct answers Its partially reflected. This means some is refracted and some is reflected. Using ultrasound, how can you measure how far away an object is? - correct answers The time taken for the reflection to reach a detector can be used to measure how far away the boundary is. Ultrasound is useful in many different ways. Name ...

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2 pages

Written in 2026/2027

Grade A+

RealGrades

Which of the following choices best characterizes an A-mode (Amplitude-mode) of displaying ultrasound information? - correct answers B. Reflector depth is demarcated along the x-axis of the ultrasound display screen. The height of the upward deflection(s) seen in an A-mode display is proportional to the ________________ of the returning echo. - correct answers A. amplitude The A-mode display provides an accurate method for determining the ___________ of reflectors. - correct answers C.de...

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2 pages

Written in 2026/2027

Grade A+

RealGrades

The sonographer should always review available patient information. - correct answers True The sonographer should write technical observations of the ultrasound examination in the patient's chart. - correct answers False The sonographer should always review the ultrasound request form. - correct answers True The sonographer should always provide the interpretive report. - correct answers False Laboratory values are part of the patient's clinical history. - correct answers True ...

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20 pages

Written in 2026/2027

Grade A+

RealGrades

In soft tissues, the assumed propagation velocity is (in meters per second): - correct answers 1540 The device that converts energy from one form to another is called the: - correct answers transducer The Fresnel zone is also called the: - correct answers near zone The display mode that shows time along the horizontal axis and depth along the vertical axis is: - correct answers M-mode Which one of the following statements about the role of sonographers is false? - correct answers Son...

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22 pages

Written in 2026/2027

Grade A+

RealGrades

Snell's Law of Refraction - correct answers sinTheta(t)/sinTheta(i) = C(t)/C(i) Aperture Focussing - correct answers Use of overlapping elements to improve depth resolution at greater depths ( reduced lateral resolution) Sonongram (velocity waveform) - correct answers Combined spectral analysis showing FFTs of In-phase and Quadrature signals to depict flow. Forward (above axis) and Reversed flow (below axis) Bernoulli's Principle - correct answers When fluid flows from one point ...

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7 pages

Written in 2026/2027

Grade A+

RealGrades

Select the sequence in decreasing order A) m, k, M, G, da b)n, m, k, d, u c) G, k, d, n, u d) M, k, m, u, n - correct answers d) M, k, m, u, n The range of ultrasonic frequency is A)less than 20 cycles per sec B)above 20,000 cycles per sec C)20 to 20,000 cycles per sec D)1 to 3 cycles per sec E)none of the above - correct answers B)above 20,000 cycles per sec Which of these waves is ultrasonic and most useful in diagnostic imaging? A)400MHz B)4MHz C)2kHz D)200,000Hz - correc...

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31 pages

Written in 2026/2027

Grade A+

RealGrades

Which of the following describes the table placement for performing an ultrasound exam? - correct answers Table height should allow the Sonographer's arm to be slightly abducted with the wrist fully extended. What wave parameter is defined as the wavelength times the number of cycles in the pulse? - correct answers spatial pulse length Spatial pulse length is defined as the wavelength times the number of cycles in the pulse. You switch from a 5MHz curved probe to a 2.5MHz sector pr...

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26 pages

Written in 2026/2027

Grade A+

RealGrades

parenchyma - correct answers the functional tissue of an organ as distinguished from the connective and supporting tissue. How does ultrasound imaging work? - correct answers A transducer converts electrical energy to ultrasounds waves and emits these into the body. Once these waves hit internal organs/ surfaces they bounce back as echoes of the original ultrasound waves. The transducer collects these echoed waves and converts them to electrical signals viewed on a monitor as a sonogram. P...

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13 pages

Written in 2026/2027

Grade A+

RealGrades

Air shows - correct answers scatter. fuzzy. snow. Fluid - correct answers Anechoic (black), weak reflector posterior enchancement associated with - correct answers fluid posterior shadowing associated with - correct answers solids (bone) solids (bone) - correct answers Hyperechoic (white) strong reflector a mixed reflector - correct answers known as hypoechoic/isoechoic why is US gel used - correct answers air causes the sound beam to scatter so we need the gel to allow the sou...

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26 pages

Written in 2026/2027

Grade A+

RealGrades

What is resolution in ultra sound? (4 points) - correct answers The ability of an imaging system to differentiate between structures and displaying them as separate entities. Spatial Resolution Contrast Resolution Temporal resolution Define Spatial resolution and what does it depend on? (2 point) - correct answers *In ultra sound: It is the ability of the machine to display two structures close together as separate images. *It depends on frequency and wavelength in ultra soun...

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10 pages

Written in 2026/2027

Grade A+

RealGrades

Ultrasound is any sound wave above the frequency of 20kHz (above human hearing). - correct answers What is ultrasound? Sound waves are longitudinal waves - so they can only pass through a material medium, not a vacuum. - correct answers What type of waves are sound waves, and what does this mean for them? λ = v/f - correct answers How can we figure out the wavelength of ultrasound waves in tissue? The higher the frequency, the shorter the wavelength. - correct answers What does the equ...

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6 pages

Written in 2026/2027

Grade A+

RealGrades

Ultrasound wavelength is determined by - correct answers sound frequency and speed of sound ______ determine the positioning of an echo on the display - correct answers Go-return time and speed of sound Edge shadowing at the edge of a curved reflector is due to a change in the ____ at an interface - correct answers speed of sound Sound attenuation in soft tissue is dependent on - correct answers sound frequency. The _____ determines the axial resolution of an ultrasound transducer. -...

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13 pages

Written in 2026/2027

Grade A+

RealGrades

a general term to encompass abdominal, breast, cardiac, gynecologic, obstetric, and vascular sonography is - correct answers diagnostic medical sonography registered cardiac sonographers specialize in fetal, pediatric, and adult... - correct answers echocardiology registered vascular technologists specialize in ___ and ___ in general. - correct answers arteries and veins one overall physics examination, encompassing sonographic principles, hemodynamics, and instrumentation, is required ...

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5 pages

Written in 2026/2027

Grade A+

RealGrades

In soft tissues, the assumed propagation velocity is (in meters per second) - correct answers 1540 m/s The device that converts energy from one form to another is called the - correct answers transducer The fresnel zone is also called the - correct answers near zone Visualization of the cardiac structures in the heart was discovered by - correct answers Hertz and Edler The display mode that shows time along the horizontal axis and depth along the vertical axis is - correct answers M-...

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4 pages

Written in 2026/2027

Grade A+

RealGrades